diff --git a/apps/web/src/components/SidebarV2.tsx b/apps/web/src/components/SidebarV2.tsx
index 1444d72e60c..e0452b1c87d 100644
--- a/apps/web/src/components/SidebarV2.tsx
+++ b/apps/web/src/components/SidebarV2.tsx
@@ -1586,10 +1586,18 @@ export default function SidebarV2() {
     [projectGroupingSettings.sidebarProjectGroupingOverrides, updateSettings],
   );
 
+  // On macOS, Ctrl+click fires contextmenu and Safari then also fires click on
+  // the same element, which would activate the radio item and change the scope
+  // underneath the settings dialog. stopPropagation on contextmenu cannot block
+  // that separate click, so the next scope change is suppressed instead. The
+  // flag clears when the menu reopens, and a real selection always starts by
+  // reopening the menu, so it can never swallow one.
+  const suppressNextScopeChangeRef = useRef(false);
   const handleProjectActions = useCallback(
-    (event: ReactMouseEvent<HTMLButtonElement>, projectGroup: SidebarProjectSnapshot) => {
+    (event: ReactMouseEvent<HTMLElement>, projectGroup: SidebarProjectSnapshot) => {
       event.preventDefault();
       event.stopPropagation();
+      suppressNextScopeChangeRef.current = true;
       setProjectScopeMenuOpen(false);
       window.requestAnimationFrame(() => setProjectActionsTarget(projectGroup));
     },
@@ -2783,7 +2791,13 @@ export default function SidebarV2() {
             </div>
             {projectGroups.length > 0 ? (
               <div className="flex items-center gap-1">
-                <Menu open={projectScopeMenuOpen} onOpenChange={setProjectScopeMenuOpen}>
+                <Menu
+                  open={projectScopeMenuOpen}
+                  onOpenChange={(open) => {
+                    if (open) suppressNextScopeChangeRef.current = false;
+                    setProjectScopeMenuOpen(open);
+                  }}
+                >
                   <MenuTrigger
                     render={
                       <SidebarMenuButton
@@ -2809,9 +2823,13 @@ export default function SidebarV2() {
                   <MenuPopup align="start" className="w-(--anchor-width)">
                     <MenuRadioGroup
                       value={projectScopeKey ?? "all"}
-                      onValueChange={(value) =>
-                        setProjectScopeKey(value === "all" ? null : (value as string))
-                      }
+                      onValueChange={(value) => {
+                        if (suppressNextScopeChangeRef.current) {
+                          suppressNextScopeChangeRef.current = false;
+                          return;
+                        }
+                        setProjectScopeKey(value === "all" ? null : (value as string));
+                      }}
                     >
                       <MenuRadioItem
                         value="all"
@@ -2829,6 +2847,9 @@ export default function SidebarV2() {
                             value={scopeKey}
                             closeOnClick
                             className="h-8 min-h-8 px-1 py-0 text-sm font-medium [&>span:last-child]:flex [&>span:last-child]:min-w-0 [&>span:last-child]:items-center [&>span:last-child]:gap-2"
+                            onContextMenu={(event) => {
+                              void handleProjectActions(event, project);
+                            }}
                           >
                             <ProjectFavicon
                               environmentId={project.environmentId}
@@ -2836,9 +2857,13 @@ export default function SidebarV2() {
                               className="size-4 shrink-0"
                             />
                             <span className="min-w-0 truncate text-sm">{project.displayName}</span>
+                            {/* Mouse-only affordance: hidden from AT because interactive children
+                                are invalid inside menuitemradio and pollute its accessible name.
+                                Keyboard/AT path is Shift+F10 (contextmenu) on the item itself. */}
                             <button
                               type="button"
-                              aria-label={`Project actions for ${project.displayName}`}
+                              tabIndex={-1}
+                              aria-hidden="true"
                               title={`Project actions for ${project.displayName}`}
                               className="ml-auto inline-flex size-6 shrink-0 cursor-pointer items-center justify-center rounded-md text-muted-foreground/55 outline-none transition-colors hover:bg-accent hover:text-foreground focus-visible:bg-accent focus-visible:text-foreground focus-visible:ring-2 focus-visible:ring-ring"
                               onPointerDown={(event) => event.stopPropagation()}