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client/src/pages/TutorialTasks.tsx

@@ -1054,16 +1054,18 @@ const TutorialTasks: React.FC = () => {
           React.startTransition(() => {
             // Narrow refetch: only this task's submissions
             if (taskId) {
-              const gridEl = submissionsGridRefs.current[taskId];
-              const gridHeight = gridEl ? gridEl.getBoundingClientRect().height : 0;
-              if (gridHeight > 0) setSpacerHeights(prev => ({ ...prev, [taskId]: gridHeight }));
-              api.get(`/api/submissions/by-source/${taskId}`).then(r => {
-                const list = (r.data && r.data.submissions) || [];
-                setUserSubmissions(prev => ({ ...prev, [taskId]: list }));
-                requestAnimationFrame(() => setSpacerHeights(prev => ({ ...prev, [taskId]: 0 })));
-              }).catch(() => {
-                requestAnimationFrame(() => setSpacerHeights(prev => ({ ...prev, [taskId]: 0 })));
-              });
+              if (!isSafari) {
+                const gridEl = submissionsGridRefs.current[taskId];
+                const gridHeight = gridEl ? gridEl.getBoundingClientRect().height : 0;
+                if (gridHeight > 0) setSpacerHeights(prev => ({ ...prev, [taskId]: gridHeight }));
+                api.get(`/api/submissions/by-source/${taskId}`).then(r => {
+                  const list = (r.data && r.data.submissions) || [];
+                  setUserSubmissions(prev => ({ ...prev, [taskId]: list }));
+                  requestAnimationFrame(() => setSpacerHeights(prev => ({ ...prev, [taskId]: 0 })));
+                }).catch(() => {
+                  requestAnimationFrame(() => setSpacerHeights(prev => ({ ...prev, [taskId]: 0 })));
+                });
+              }
             } else {
               // Fallback
               requestAnimationFrame(() => requestAnimationFrame(() => fetchUserSubmissions(tutorialTasks)));
@@ -1084,7 +1086,18 @@ const TutorialTasks: React.FC = () => {
         unlockCardHeightById(taskId);
         unlockGridHeightById(taskId);
       }
-      if (isSafari) { unfreezeScroll(); }
+      if (isSafari) { 
+        unfreezeScroll();
+        // Safari: delay per-task refetch until after unlock to avoid visible reflow
+        if (taskId) {
+          setTimeout(() => {
+            api.get(`/api/submissions/by-source/${taskId}`).then(r => {
+              const list = (r.data && r.data.submissions) || [];
+              setUserSubmissions(prev => ({ ...prev, [taskId]: list }));
+            }).catch(() => {});
+          }, 300);
+        }
+      }
       setMutatingTaskId(null);
     }));
   };