diff --git a/web/components/headers/project-issue-details.tsx b/web/components/headers/project-issue-details.tsx
index 8d3a22682..3732f2598 100644
--- a/web/components/headers/project-issue-details.tsx
+++ b/web/components/headers/project-issue-details.tsx
@@ -3,7 +3,7 @@ import useSWR from "swr";
 import { useRouter } from "next/router";
 import { observer } from "mobx-react-lite";
 // hooks
-import { useProject } from "hooks/store";
+import { useApplication, useProject } from "hooks/store";
 // ui
 import { Breadcrumbs, LayersIcon } from "@plane/ui";
 // helpers
@@ -15,6 +15,8 @@ import { ISSUE_DETAILS } from "constants/fetch-keys";
 // components
 import { SidebarHamburgerToggle } from "components/core/sidebar/sidebar-menu-hamburger-toggle";
 import { BreadcrumbLink } from "components/common";
+import { PanelRight } from "lucide-react";
+import { cn } from "helpers/common.helper";
 
 // services
 const issueService = new IssueService();
@@ -25,6 +27,7 @@ export const ProjectIssueDetailsHeader: FC = observer(() => {
   const { workspaceSlug, projectId, issueId } = router.query;
   // store hooks
   const { currentProjectDetails, getProjectById } = useProject();
+  const { theme: themeStore } = useApplication();
 
   const { data: issueDetails } = useSWR(
     workspaceSlug && projectId && issueId ? ISSUE_DETAILS(issueId as string) : null,
@@ -33,12 +36,14 @@ export const ProjectIssueDetailsHeader: FC = observer(() => {
       : null
   );
 
+  const isSidebarCollapsed = themeStore.issueDetailSidebarCollapsed;
+
   return (
     <div className="relative z-10 flex h-[3.75rem] w-full flex-shrink-0 flex-row items-center justify-between gap-x-2 gap-y-4 border-b border-custom-border-200 bg-custom-sidebar-background-100 p-4">
       <div className="flex w-full flex-grow items-center gap-2 overflow-ellipsis whitespace-nowrap">
         <SidebarHamburgerToggle />
         <div>
-          <Breadcrumbs>
+          <Breadcrumbs onBack={router.back}>
             <Breadcrumbs.BreadcrumbItem
               type="text"
               link={
@@ -85,6 +90,9 @@ export const ProjectIssueDetailsHeader: FC = observer(() => {
           </Breadcrumbs>
         </div>
       </div>
+      <button className="block md:hidden" onClick={() => themeStore.toggleIssueDetailSidebar()}>
+        <PanelRight className={cn("w-4 h-4 ", !isSidebarCollapsed ? "text-custom-primary-100" : " text-custom-text-200")} />
+      </button>
     </div>
   );
 });
diff --git a/web/components/issues/issue-detail/issue-activity/activity/actions/helpers/activity-block.tsx b/web/components/issues/issue-detail/issue-activity/activity/actions/helpers/activity-block.tsx
index eabe5d518..c7b75340b 100644
--- a/web/components/issues/issue-detail/issue-activity/activity/actions/helpers/activity-block.tsx
+++ b/web/components/issues/issue-detail/issue-activity/activity/actions/helpers/activity-block.tsx
@@ -33,7 +33,7 @@ export const IssueActivityBlockComponent: FC<TIssueActivityBlockComponent> = (pr
       }`}
     >
       <div className="absolute left-[13px] top-0 bottom-0 w-0.5 bg-custom-background-80" aria-hidden={true} />
-      <div className="flex-shrink-0 ring-6 w-7 h-7 rounded-full overflow-hidden flex justify-center items-center z-10 bg-custom-background-80 text-custom-text-200">
+      <div className="flex-shrink-0 ring-6 w-7 h-7 rounded-full overflow-hidden flex justify-center items-center z-[4] bg-custom-background-80 text-custom-text-200">
         {icon ? icon : <Network className="w-3.5 h-3.5" />}
       </div>
       <div className="w-full text-custom-text-200">
diff --git a/web/components/issues/issue-detail/root.tsx b/web/components/issues/issue-detail/root.tsx
index 2e0303a8e..902ba7c25 100644
--- a/web/components/issues/issue-detail/root.tsx
+++ b/web/components/issues/issue-detail/root.tsx
@@ -9,13 +9,14 @@ import { EmptyState } from "components/common";
 // images
 import emptyIssue from "public/empty-state/issue.svg";
 // hooks
-import { useEventTracker, useIssueDetail, useIssues, useUser } from "hooks/store";
+import { useApplication, useEventTracker, useIssueDetail, useIssues, useUser } from "hooks/store";
 import useToast from "hooks/use-toast";
 // types
 import { TIssue } from "@plane/types";
 // constants
 import { EUserProjectRoles } from "constants/project";
 import { EIssuesStoreType } from "constants/issue";
+import { observer } from "mobx-react";
 
 export type TIssueOperations = {
   fetch: (workspaceSlug: string, projectId: string, issueId: string) => Promise<void>;
@@ -51,7 +52,7 @@ export type TIssueDetailRoot = {
   is_archived?: boolean;
 };
 
-export const IssueDetailRoot: FC<TIssueDetailRoot> = (props) => {
+export const IssueDetailRoot: FC<TIssueDetailRoot> = observer((props) => {
   const { workspaceSlug, projectId, issueId, is_archived = false } = props;
   // router
   const router = useRouter();
@@ -75,6 +76,7 @@ export const IssueDetailRoot: FC<TIssueDetailRoot> = (props) => {
   const {
     membership: { currentProjectRole },
   } = useUser();
+  const { theme: themeStore } = useApplication();
 
   const issueOperations: TIssueOperations = useMemo(
     () => ({
@@ -346,8 +348,8 @@ export const IssueDetailRoot: FC<TIssueDetailRoot> = (props) => {
           }}
         />
       ) : (
-        <div className="flex h-full overflow-hidden">
-          <div className="h-full w-2/3 space-y-5 divide-y-2 divide-custom-border-300 overflow-y-auto p-5">
+        <div className="flex w-full h-full overflow-hidden">
+          <div className="h-full w-full max-w-2/3 space-y-5 divide-y-2 divide-custom-border-300 overflow-y-auto p-5">
             <IssueMainContent
               workspaceSlug={workspaceSlug}
               projectId={projectId}
@@ -356,7 +358,9 @@ export const IssueDetailRoot: FC<TIssueDetailRoot> = (props) => {
               is_editable={!is_archived && is_editable}
             />
           </div>
-          <div className="h-full w-1/3 space-y-5 overflow-hidden border-l border-custom-border-300 py-5">
+          <div className="h-full w-full sm:w-1/2 md:w-1/3 space-y-5 overflow-hidden border-l border-custom-border-300 py-5 fixed md:relative bg-custom-sidebar-background-100 right-0 z-[5]"
+            style={themeStore.issueDetailSidebarCollapsed ? { right: `-${window?.innerWidth || 0}px` } : {}}
+          >
             <IssueDetailsSidebar
               workspaceSlug={workspaceSlug}
               projectId={projectId}
@@ -373,4 +377,4 @@ export const IssueDetailRoot: FC<TIssueDetailRoot> = (props) => {
       <IssuePeekOverview />
     </>
   );
-};
+});
diff --git a/web/components/issues/issue-detail/sidebar.tsx b/web/components/issues/issue-detail/sidebar.tsx
index 668d3538f..c78bbe942 100644
--- a/web/components/issues/issue-detail/sidebar.tsx
+++ b/web/components/issues/issue-detail/sidebar.tsx
@@ -187,9 +187,8 @@ export const IssueDetailsSidebar: React.FC<Props> = observer((props) => {
                 buttonVariant={issue?.assignee_ids?.length > 1 ? "transparent-without-text" : "transparent-with-text"}
                 className="w-3/5 flex-grow group"
                 buttonContainerClassName="w-full text-left"
-                buttonClassName={`text-sm justify-between ${
-                  issue?.assignee_ids.length > 0 ? "" : "text-custom-text-400"
-                }`}
+                buttonClassName={`text-sm justify-between ${issue?.assignee_ids.length > 0 ? "" : "text-custom-text-400"
+                  }`}
                 hideIcon={issue.assignee_ids?.length === 0}
                 dropdownArrow
                 dropdownArrowClassName="h-3.5 w-3.5 hidden group-hover:inline"
@@ -233,8 +232,8 @@ export const IssueDetailsSidebar: React.FC<Props> = observer((props) => {
                 buttonClassName={`text-sm ${issue?.start_date ? "" : "text-custom-text-400"}`}
                 hideIcon
                 clearIconClassName="h-3 w-3 hidden group-hover:inline"
-                // TODO: add this logic
-                // showPlaceholderIcon
+              // TODO: add this logic
+              // showPlaceholderIcon
               />
             </div>
 
@@ -259,8 +258,8 @@ export const IssueDetailsSidebar: React.FC<Props> = observer((props) => {
                 buttonClassName={`text-sm ${issue?.target_date ? "" : "text-custom-text-400"}`}
                 hideIcon
                 clearIconClassName="h-3 w-3 hidden group-hover:inline"
-                // TODO: add this logic
-                // showPlaceholderIcon
+              // TODO: add this logic
+              // showPlaceholderIcon
               />
             </div>
 
diff --git a/web/components/issues/issue-detail/subscription.tsx b/web/components/issues/issue-detail/subscription.tsx
index b57e75bed..8d05140b3 100644
--- a/web/components/issues/issue-detail/subscription.tsx
+++ b/web/components/issues/issue-detail/subscription.tsx
@@ -1,5 +1,5 @@
 import { FC, useState } from "react";
-import { Bell } from "lucide-react";
+import { Bell, BellOff } from "lucide-react";
 import { observer } from "mobx-react-lite";
 // UI
 import { Button } from "@plane/ui";
@@ -52,12 +52,20 @@ export const IssueSubscription: FC<TIssueSubscription> = observer((props) => {
     <div>
       <Button
         size="sm"
-        prependIcon={<Bell className="h-3 w-3" />}
+        prependIcon={subscription?.subscribed ? <BellOff /> : <Bell className="h-3 w-3" />}
         variant="outline-primary"
         className="hover:!bg-custom-primary-100/20"
         onClick={handleSubscription}
       >
-        {loading ? "Loading..." : subscription?.subscribed ? "Unsubscribe" : "Subscribe"}
+        {loading ? (
+          <span>
+            <span className="hidden sm:block">Loading</span>...
+          </span>
+        ) : subscription?.subscribed ? (
+          <div className="hidden sm:block">Unsubscribe</div>
+        ) : (
+          <div className="hidden sm:block">Subscribe</div>
+        )}
       </Button>
     </div>
   );
diff --git a/web/components/issues/issue-layouts/spreadsheet/columns/header-column.tsx b/web/components/issues/issue-layouts/spreadsheet/columns/header-column.tsx
index dc9f8c7c6..95982ab25 100644
--- a/web/components/issues/issue-layouts/spreadsheet/columns/header-column.tsx
+++ b/web/components/issues/issue-layouts/spreadsheet/columns/header-column.tsx
@@ -63,14 +63,14 @@ export const SpreadsheetHeaderColumn = (props: Props) => {
         </div>
       }
       placement="bottom-end"
+      closeOnSelect
     >
       <CustomMenu.MenuItem onClick={() => handleOrderBy(propertyDetails.ascendingOrderKey, property)}>
         <div
-          className={`flex items-center justify-between gap-1.5 px-1 ${
-            selectedMenuItem === `${propertyDetails.ascendingOrderKey}_${property}`
-              ? "text-custom-text-100"
-              : "text-custom-text-200 hover:text-custom-text-100"
-          }`}
+          className={`flex items-center justify-between gap-1.5 px-1 ${selectedMenuItem === `${propertyDetails.ascendingOrderKey}_${property}`
+            ? "text-custom-text-100"
+            : "text-custom-text-200 hover:text-custom-text-100"
+            }`}
         >
           <div className="flex items-center gap-2">
             <ArrowDownWideNarrow className="h-3 w-3 stroke-[1.5]" />
@@ -84,11 +84,10 @@ export const SpreadsheetHeaderColumn = (props: Props) => {
       </CustomMenu.MenuItem>
       <CustomMenu.MenuItem onClick={() => handleOrderBy(propertyDetails.descendingOrderKey, property)}>
         <div
-          className={`flex items-center justify-between gap-1.5 px-1 ${
-            selectedMenuItem === `${propertyDetails.descendingOrderKey}_${property}`
-              ? "text-custom-text-100"
-              : "text-custom-text-200 hover:text-custom-text-100"
-          }`}
+          className={`flex items-center justify-between gap-1.5 px-1 ${selectedMenuItem === `${propertyDetails.descendingOrderKey}_${property}`
+            ? "text-custom-text-100"
+            : "text-custom-text-200 hover:text-custom-text-100"
+            }`}
         >
           <div className="flex items-center gap-2">
             <ArrowUpNarrowWide className="h-3 w-3 stroke-[1.5]" />
diff --git a/web/pages/[workspaceSlug]/projects/[projectId]/issues/[issueId].tsx b/web/pages/[workspaceSlug]/projects/[projectId]/issues/[issueId].tsx
index 6be784368..64f43939e 100644
--- a/web/pages/[workspaceSlug]/projects/[projectId]/issues/[issueId].tsx
+++ b/web/pages/[workspaceSlug]/projects/[projectId]/issues/[issueId].tsx
@@ -1,4 +1,4 @@
-import React, { ReactElement } from "react";
+import React, { ReactElement, useEffect } from "react";
 import { useRouter } from "next/router";
 import useSWR from "swr";
 import { observer } from "mobx-react-lite";
@@ -12,7 +12,7 @@ import { Loader } from "@plane/ui";
 // types
 import { NextPageWithLayout } from "lib/types";
 // fetch-keys
-import { useIssueDetail } from "hooks/store";
+import { useApplication, useIssueDetail } from "hooks/store";
 
 const IssueDetailsPage: NextPageWithLayout = observer(() => {
   // router
@@ -23,6 +23,7 @@ const IssueDetailsPage: NextPageWithLayout = observer(() => {
     fetchIssue,
     issue: { getIssueById },
   } = useIssueDetail();
+  const { theme: themeStore } = useApplication();
 
   const { isLoading } = useSWR(
     workspaceSlug && projectId && issueId ? `ISSUE_DETAIL_${workspaceSlug}_${projectId}_${issueId}` : null,
@@ -34,6 +35,21 @@ const IssueDetailsPage: NextPageWithLayout = observer(() => {
   const issue = getIssueById(issueId?.toString() || "") || undefined;
   const issueLoader = !issue || isLoading ? true : false;
 
+  useEffect(() => {
+    const handleToggleIssueDetailSidebar = () => {
+      if (window && window.innerWidth < 768) {
+        themeStore.toggleIssueDetailSidebar(true);
+      }
+      if (window && themeStore.issueDetailSidebarCollapsed && window.innerWidth >= 768) {
+        themeStore.toggleIssueDetailSidebar(false);
+      }
+    };
+
+    window.addEventListener("resize", handleToggleIssueDetailSidebar);
+    handleToggleIssueDetailSidebar();
+    return () => window.removeEventListener("resize", handleToggleIssueDetailSidebar);
+  }, [themeStore]);
+
   return (
     <>
       {issueLoader ? (
diff --git a/web/store/application/theme.store.ts b/web/store/application/theme.store.ts
index f264c175d..505f3803c 100644
--- a/web/store/application/theme.store.ts
+++ b/web/store/application/theme.store.ts
@@ -9,11 +9,13 @@ export interface IThemeStore {
   sidebarCollapsed: boolean | undefined;
   profileSidebarCollapsed: boolean | undefined;
   workspaceAnalyticsSidebarCollapsed: boolean | undefined;
+  issueDetailSidebarCollapsed: boolean | undefined;
   // actions
   toggleSidebar: (collapsed?: boolean) => void;
   setTheme: (theme: any) => void;
   toggleProfileSidebar: (collapsed?: boolean) => void;
   toggleWorkspaceAnalyticsSidebar: (collapsed?: boolean) => void;
+  toggleIssueDetailSidebar: (collapsed?: boolean) => void;
 }
 
 export class ThemeStore implements IThemeStore {
@@ -22,6 +24,7 @@ export class ThemeStore implements IThemeStore {
   theme: string | null = null;
   profileSidebarCollapsed: boolean | undefined = undefined;
   workspaceAnalyticsSidebarCollapsed: boolean | undefined = undefined;
+  issueDetailSidebarCollapsed: boolean | undefined = undefined;
   // root store
   rootStore;
 
@@ -32,11 +35,13 @@ export class ThemeStore implements IThemeStore {
       theme: observable.ref,
       profileSidebarCollapsed: observable.ref,
       workspaceAnalyticsSidebarCollapsed: observable.ref,
+      issueDetailSidebarCollapsed: observable.ref,
       // action
       toggleSidebar: action,
       setTheme: action,
       toggleProfileSidebar: action,
-      toggleWorkspaceAnalyticsSidebar: action
+      toggleWorkspaceAnalyticsSidebar: action,
+      toggleIssueDetailSidebar: action,
       // computed
     });
     // root store
@@ -82,6 +87,15 @@ export class ThemeStore implements IThemeStore {
     localStorage.setItem("workspace_analytics_sidebar_collapsed", this.workspaceAnalyticsSidebarCollapsed.toString());
   };
 
+  toggleIssueDetailSidebar = (collapsed?: boolean) => {
+    if(collapsed === undefined) {
+      this.issueDetailSidebarCollapsed = !this.issueDetailSidebarCollapsed;
+    } else {
+      this.issueDetailSidebarCollapsed = collapsed;
+    }
+    localStorage.setItem("issue_detail_sidebar_collapsed", this.issueDetailSidebarCollapsed.toString());
+  }
+
   /**
    * Sets the user theme and applies it to the platform
    * @param _theme