Fix inbox workspace grouping refresh persistence

ui/src/lib/inbox.test.ts

@@ -43,6 +43,7 @@ import {
   saveInboxIssueColumns,
   saveInboxWorkItemGroupBy,
   saveLastInboxTab,
+  shouldResetInboxWorkspaceGrouping,
   shouldShowInboxSection,
   type InboxWorkItem,
 } from "./inbox";
@@ -1079,4 +1080,14 @@ describe("inbox helpers", () => {
     saveInboxWorkItemGroupBy("workspace");
     expect(loadInboxWorkItemGroupBy()).toBe("workspace");
   });
+
+  it("does not reset workspace grouping before experimental settings have loaded", () => {
+    expect(shouldResetInboxWorkspaceGrouping("workspace", false, false)).toBe(false);
+  });
+
+  it("resets workspace grouping only when settings are loaded and workspace grouping is unavailable", () => {
+    expect(shouldResetInboxWorkspaceGrouping("workspace", false, true)).toBe(true);
+    expect(shouldResetInboxWorkspaceGrouping("workspace", true, true)).toBe(false);
+    expect(shouldResetInboxWorkspaceGrouping("none", false, true)).toBe(false);
+  });
 });

ui/src/lib/inbox.ts

@@ -321,6 +321,14 @@ export function saveInboxWorkItemGroupBy(groupBy: InboxWorkItemGroupBy) {
   }
 }
 
+export function shouldResetInboxWorkspaceGrouping(
+  groupBy: InboxWorkItemGroupBy,
+  isolatedWorkspacesEnabled: boolean,
+  experimentalSettingsLoaded: boolean,
+): boolean {
+  return experimentalSettingsLoaded && groupBy === "workspace" && !isolatedWorkspacesEnabled;
+}
+
 export function shouldIncludeRoutineExecutionIssue(
   issue: Pick<Issue, "originKind">,
   showRoutineExecutions: boolean,

ui/src/pages/Inbox.tsx

@@ -116,6 +116,7 @@ import {
   loadInboxWorkItemGroupBy,
   normalizeInboxIssueColumns,
   resolveInboxNestingEnabled,
+  shouldResetInboxWorkspaceGrouping,
   resolveIssueWorkspaceName,
   resolveInboxSelectionIndex,
   saveInboxFilterPreferences,
@@ -649,6 +650,7 @@ export function Inbox() {
     queryFn: () => instanceSettingsApi.getExperimental(),
     retry: false,
   });
+  const experimentalSettingsLoaded = experimentalSettings !== undefined;
   const [searchQuery, setSearchQuery] = useState("");
   const normalizedSearchQuery = searchQuery.trim();
   const [filterPreferences, setFilterPreferences] = useState<InboxFilterPreferences>(
@@ -1093,10 +1095,10 @@ export function Inbox() {
   const [nestingPreferenceEnabled, setNestingPreferenceEnabled] = useState(() => loadInboxNesting());
   const nestingEnabled = resolveInboxNestingEnabled(nestingPreferenceEnabled, isMobile);
   useEffect(() => {
-    if (isolatedWorkspacesEnabled || groupBy !== "workspace") return;
+    if (!shouldResetInboxWorkspaceGrouping(groupBy, isolatedWorkspacesEnabled, experimentalSettingsLoaded)) return;
     setGroupBy("none");
     saveInboxWorkItemGroupBy("none");
-  }, [groupBy, isolatedWorkspacesEnabled]);
+  }, [experimentalSettingsLoaded, groupBy, isolatedWorkspacesEnabled]);
   const toggleNesting = useCallback(() => {
     setNestingPreferenceEnabled((prev) => {
       const next = !prev;