fix(cdk/scrolling): move setting transform to ngAfterViewChecked

Author: mmalerba

src/cdk/scrolling/virtual-scroll-viewport.ts

@@ -504,6 +504,14 @@ export class CdkVirtualScrollViewport extends CdkVirtualScrollable implements On
     }
   }
 
+  ngAfterViewChecked() {
+    // Apply the content transform. The transform can't be set via an Angular binding because
+    // bypassSecurityTrustStyle is banned in Google. However the value is safe, it's composed of
+    // string literals, a variable that can only be 'X' or 'Y', and user input that is run through
+    // the `Number` function first to coerce it to a numeric value.
+    this._contentWrapper.nativeElement.style.transform = this._renderedContentTransform;
+  }
+
   /** Run change detection. */
   private _doChangeDetection() {
     if (this._isDestroyed) {
@@ -515,11 +523,6 @@ export class CdkVirtualScrollViewport extends CdkVirtualScrollable implements On
       afterNextRender(
         () => {
           this._isChangeDetectionPending = false;
-          // Apply the content transform. The transform can't be set via an Angular binding because
-          // bypassSecurityTrustStyle is banned in Google. However the value is safe, it's composed of
-          // string literals, a variable that can only be 'X' or 'Y', and user input that is run through
-          // the `Number` function first to coerce it to a numeric value.
-          this._contentWrapper.nativeElement.style.transform = this._renderedContentTransform;
           const runAfterChangeDetection = this._runAfterChangeDetection;
           this._runAfterChangeDetection = [];
           for (const fn of runAfterChangeDetection) {

tools/public_api_guard/cdk/scrolling.md

@@ -205,6 +205,8 @@ export class CdkVirtualScrollViewport extends CdkVirtualScrollable implements On
     // (undocumented)
     static ngAcceptInputType_appendOnly: unknown;
     // (undocumented)
+    ngAfterViewChecked(): void;
+    // (undocumented)
     ngOnDestroy(): void;
     // (undocumented)
     ngOnInit(): void;