scroller: no reflow if nothing changed

src/components/ScrollerManager.vue

@@ -124,8 +124,15 @@ export default class ScrollerManager extends Mixins(GlobalMixin) {
             this.recreate();
         }
 
+        // Height of recycler view
+        const oldRecyclerHeight = this.recyclerHeight;
         this.recyclerHeight = this.recycler.$refs.wrapper.clientHeight;
 
+        // Check if nothing changed
+        if (orderOnly && oldRecyclerHeight === this.recyclerHeight) {
+            return;
+        }
+
         // Static extra height at top
         const rb = this.recyclerBefore as Element;
         const extraHeight = rb?.clientHeight || 0;