diff --git a/web/components/issues/issue-layouts/list/block.tsx b/web/components/issues/issue-layouts/list/block.tsx
index d38eb1199..df09a0762 100644
--- a/web/components/issues/issue-layouts/list/block.tsx
+++ b/web/components/issues/issue-layouts/list/block.tsx
@@ -67,8 +67,9 @@ export const IssueBlock = observer((props: IssueBlockProps) => {
     !getIsIssuePeeked(issue.id) &&
     setPeekIssue({ workspaceSlug, projectId: issue.project_id, issueId: issue.id, nestingLevel: nestingLevel });
 
-  const issue = issuesMap[issueId];
-  const subIssues = subIssuesStore.subIssuesByIssueId(issueId);
+    const issue = issuesMap[issueId];
+    const subIssuesCount = issue.sub_issues_count;
+
   const { isMobile } = usePlatformOS();
 
   useEffect(() => {
@@ -97,8 +98,6 @@ export const IssueBlock = observer((props: IssueBlockProps) => {
 
   const canEditIssueProperties = canEditProperties(issue.project_id);
   const projectIdentifier = getProjectIdentifierById(issue.project_id);
-  // if sub issues have been fetched for the issue, use that for count or use issue's sub_issues_count
-  const subIssuesCount = subIssues ? subIssues.length : issue.sub_issues_count;
 
   const paddingLeft = `${spacingLeft}px`;
 
diff --git a/web/components/issues/issue-layouts/properties/all-properties.tsx b/web/components/issues/issue-layouts/properties/all-properties.tsx
index 98c696b6e..79f2fca70 100644
--- a/web/components/issues/issue-layouts/properties/all-properties.tsx
+++ b/web/components/issues/issue-layouts/properties/all-properties.tsx
@@ -2,10 +2,13 @@ import { useCallback, useMemo } from "react";
 import xor from "lodash/xor";
 import { observer } from "mobx-react";
 import { useRouter } from "next/router";
+// icons
 import { CalendarCheck2, CalendarClock, Layers, Link, Paperclip } from "lucide-react";
+// types
 import { TIssue, IIssueDisplayProperties, TIssuePriorities } from "@plane/types";
-// hooks
+// ui
 import { Tooltip } from "@plane/ui";
+// components
 import {
   DateDropdown,
   EstimateDropdown,
@@ -15,23 +18,19 @@ import {
   CycleDropdown,
   StateDropdown,
 } from "@/components/dropdowns";
-// helpers
-
-// types
 // constants
 import { ISSUE_UPDATED } from "@/constants/event-tracker";
 import { EIssuesStoreType } from "@/constants/issue";
+// helpers
 import { cn } from "@/helpers/common.helper";
 import { getDate, renderFormattedPayloadDate } from "@/helpers/date-time.helper";
 import { shouldHighlightIssueDueDate } from "@/helpers/issue.helper";
+// hooks
 import { useEventTracker, useEstimate, useLabel, useIssues, useProjectState, useProject } from "@/hooks/store";
 import { usePlatformOS } from "@/hooks/use-platform-os";
-// components
+// local components
 import { IssuePropertyLabels } from "../properties/labels";
 import { WithDisplayPropertiesHOC } from "../properties/with-display-properties-HOC";
-// helpers
-// types
-// constants
 
 export interface IIssueProperties {
   issue: TIssue;
@@ -64,6 +63,7 @@ export const IssueProperties: React.FC<IIssueProperties> = observer((props) => {
   const currentLayout = `${activeLayout} layout`;
   // derived values
   const stateDetails = getStateById(issue.state_id);
+  const subIssueCount = issue.sub_issues_count;
 
   const issueOperations = useMemo(
     () => ({
@@ -414,24 +414,24 @@ export const IssueProperties: React.FC<IIssueProperties> = observer((props) => {
       <WithDisplayPropertiesHOC
         displayProperties={displayProperties}
         displayPropertyKey="sub_issue_count"
-        shouldRenderProperty={(properties) => !!properties.sub_issue_count && !!issue.sub_issues_count}
+        shouldRenderProperty={(properties) => !!properties.sub_issue_count && !!subIssueCount}
       >
-        <Tooltip tooltipHeading="Sub-issues" tooltipContent={`${issue.sub_issues_count}`} isMobile={isMobile}>
+        <Tooltip tooltipHeading="Sub-issues" tooltipContent={`${subIssueCount}`} isMobile={isMobile}>
           <div
             onClick={(e) => {
               e.stopPropagation();
               e.preventDefault();
-              if (issue.sub_issues_count) redirectToIssueDetail();
+              if (subIssueCount) redirectToIssueDetail();
             }}
             className={cn(
               "flex h-5 flex-shrink-0 items-center justify-center gap-2 overflow-hidden rounded border-[0.5px] border-custom-border-300 px-2.5 py-1",
               {
-                "hover:bg-custom-background-80 cursor-pointer": issue.sub_issues_count,
+                "hover:bg-custom-background-80 cursor-pointer": subIssueCount,
               }
             )}
           >
             <Layers className="h-3 w-3 flex-shrink-0" strokeWidth={2} />
-            <div className="text-xs">{issue.sub_issues_count}</div>
+            <div className="text-xs">{subIssueCount}</div>
           </div>
         </Tooltip>
       </WithDisplayPropertiesHOC>
diff --git a/web/components/issues/issue-layouts/spreadsheet/columns/sub-issue-column.tsx b/web/components/issues/issue-layouts/spreadsheet/columns/sub-issue-column.tsx
index b36ace826..c597bc698 100644
--- a/web/components/issues/issue-layouts/spreadsheet/columns/sub-issue-column.tsx
+++ b/web/components/issues/issue-layouts/spreadsheet/columns/sub-issue-column.tsx
@@ -18,6 +18,8 @@ export const SpreadsheetSubIssueColumn: React.FC<Props> = observer((props: Props
   const router = useRouter();
   // hooks
   const { workspaceSlug } = useAppRouter();
+  // derived values
+  const subIssueCount = issue.sub_issues_count;
 
   const redirectToIssueDetail = () => {
     router.push({
@@ -30,15 +32,15 @@ export const SpreadsheetSubIssueColumn: React.FC<Props> = observer((props: Props
 
   return (
     <div
-      onClick={issue?.sub_issues_count ? redirectToIssueDetail : () => {}}
+      onClick={subIssueCount ? redirectToIssueDetail : () => {}}
       className={cn(
         "flex h-11 w-full items-center border-b-[0.5px] border-custom-border-200 px-2.5 py-1 text-xs hover:bg-custom-background-80",
         {
-          "cursor-pointer": issue?.sub_issues_count,
+          "cursor-pointer": subIssueCount,
         }
       )}
     >
-      {issue?.sub_issues_count} {issue?.sub_issues_count === 1 ? "sub-issue" : "sub-issues"}
+      {subIssueCount} {subIssueCount === 1 ? "sub-issue" : "sub-issues"}
     </div>
   );
 });
diff --git a/web/components/issues/issue-layouts/spreadsheet/issue-row.tsx b/web/components/issues/issue-layouts/spreadsheet/issue-row.tsx
index 180cb9036..03854fcad 100644
--- a/web/components/issues/issue-layouts/spreadsheet/issue-row.tsx
+++ b/web/components/issues/issue-layouts/spreadsheet/issue-row.tsx
@@ -170,7 +170,6 @@ const IssueRowDetails = observer((props: IssueRowDetailsProps) => {
   const { subIssues: subIssuesStore, issue } = useIssueDetail();
 
   const issueDetail = issue.getIssueById(issueId);
-  const subIssues = subIssuesStore.subIssuesByIssueId(issueId);
 
   const paddingLeft = `${spacingLeft}px`;
 
@@ -204,8 +203,7 @@ const IssueRowDetails = observer((props: IssueRowDetailsProps) => {
   };
 
   const disableUserActions = !canEditProperties(issueDetail.project_id);
-  // if sub issues have been fetched for the issue, use that for count or use issue's sub_issues_count
-  const subIssuesCount = subIssues ? subIssues.length : issueDetail.sub_issues_count;
+  const subIssuesCount = issueDetail.sub_issues_count;
 
   return (
     <>
diff --git a/web/components/issues/sub-issues/issue-list-item.tsx b/web/components/issues/sub-issues/issue-list-item.tsx
index 23ba330a9..111d5d6c6 100644
--- a/web/components/issues/sub-issues/issue-list-item.tsx
+++ b/web/components/issues/sub-issues/issue-list-item.tsx
@@ -59,6 +59,7 @@ export const IssueListItem: React.FC<ISubIssues> = observer((props) => {
     undefined;
 
   const subIssueHelpers = subIssueHelpersByIssueId(parentIssueId);
+  const subIssueCount = issue?.sub_issues_count || 0;
 
   const handleIssuePeekOverview = (issue: TIssue) =>
     workspaceSlug &&
@@ -77,7 +78,7 @@ export const IssueListItem: React.FC<ISubIssues> = observer((props) => {
           style={{ paddingLeft: `${spacingLeft}px` }}
         >
           <div className="h-[22px] w-[22px] flex-shrink-0">
-            {issue?.sub_issues_count > 0 && (
+            {subIssueCount > 0 && (
               <>
                 {subIssueHelpers.preview_loader.includes(issue.id) ? (
                   <div className="flex h-full w-full cursor-not-allowed items-center justify-center rounded-sm bg-custom-background-80 transition-all">
@@ -205,7 +206,7 @@ export const IssueListItem: React.FC<ISubIssues> = observer((props) => {
         </div>
       )}
 
-      {subIssueHelpers.issue_visibility.includes(issueId) && issue.sub_issues_count && issue.sub_issues_count > 0 && (
+      {subIssueHelpers.issue_visibility.includes(issueId) && subIssueCount > 0 && (
         <IssueList
           workspaceSlug={workspaceSlug}
           projectId={issue.project_id}
diff --git a/web/store/issue/issue-details/sub_issues.store.ts b/web/store/issue/issue-details/sub_issues.store.ts
index f4bd20772..bb1cf922c 100644
--- a/web/store/issue/issue-details/sub_issues.store.ts
+++ b/web/store/issue/issue-details/sub_issues.store.ts
@@ -174,6 +174,13 @@ export class IssueSubIssuesStore implements IIssueSubIssuesStore {
 
       this.rootIssueDetailStore.rootIssueStore.issues.addIssue(subIssues);
 
+      // update sub-issues_count of the parent issue
+      set(
+        this.rootIssueDetailStore.rootIssueStore.issues.issuesMap,
+        [parentIssueId, "sub_issues_count"],
+        this.subIssues[parentIssueId].length
+      );
+
       return;
     } catch (error) {
       throw error;
@@ -270,6 +277,12 @@ export class IssueSubIssuesStore implements IIssueSubIssuesStore {
 
       runInAction(() => {
         pull(this.subIssues[parentIssueId], issueId);
+        // update sub-issues_count of the parent issue
+        set(
+          this.rootIssueDetailStore.rootIssueStore.issues.issuesMap,
+          [parentIssueId, "sub_issues_count"],
+          this.subIssues[parentIssueId].length
+        );
       });
 
       return;
@@ -301,6 +314,12 @@ export class IssueSubIssuesStore implements IIssueSubIssuesStore {
 
       runInAction(() => {
         pull(this.subIssues[parentIssueId], issueId);
+        // update sub-issues_count of the parent issue
+        set(
+          this.rootIssueDetailStore.rootIssueStore.issues.issuesMap,
+          [parentIssueId, "sub_issues_count"],
+          this.subIssues[parentIssueId].length
+        );
       });
 
       return;