Fix setCellDimensions broken updates by using Annotation model's get2DArea function

partials/GridEditor.vue

@@ -921,14 +921,14 @@
         if (annotation) {
           let
             parsed = annotation.target.selector._value,
-            sliced = parsed.xywh.slice(0, 4),
-            x = sliced[0],
-            y = sliced[1]
+            target = this.data.grid.get2DArea(parsed.xywh.slice(0, 2), [_w, _h])
 
-          const value = { xywh: [x, y, _w, _h] }
-          annotation.target.selector.value = value
-
-          await this.$store.dispatch('annotations/patch', [annotation.id, { target: { selector: { value } } }])
+          annotation.target.selector.value = target.selector.value
+          await this.$store.dispatch('annotations/patch', [annotation.id, {
+            target: {
+              selector: { value: target.selector.value }
+            }
+          }])
         }
       },
       //