fix(core): prevent unnecessary wrapper re-render (#2855)

fix #2847
ngx-formly · May 22, 2021 · b26d64f · b26d64f
1 parent 4d688fe
commit b26d64f
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/core/src/lib/components/formly.field.ts b/src/core/src/lib/components/formly.field.ts
@@ -100,6 +100,10 @@ export class FormlyField implements OnInit, OnChanges, DoCheck, AfterContentInit
       this.attachComponentRef(ref, f);
       wrapProperty<ViewContainerRef>(ref.instance, 'fieldComponent', ({ firstChange, previousValue, currentValue }) => {
         if (currentValue) {
+          if (previousValue && previousValue['_lContainer'] === currentValue['_lContainer']) {
+            return;
+          }
+
           const viewRef = previousValue ? previousValue.detach() : null;
           if (viewRef && !viewRef.destroyed) {
             currentValue.insert(viewRef);