Merge branch 'master' into linking-anh

1 files changed, 5 insertions, 3 deletions

diff --git a/src/client/views/nodes/WebBox.tsx b/src/client/views/nodes/WebBox.tsx
index f3a4a46de..2ff41c73a 100644
--- a/src/client/views/nodes/WebBox.tsx
+++ b/src/client/views/nodes/WebBox.tsx
@@ -179,7 +179,7 @@ export class WebBox extends ViewBoxAnnotatableComponent<ViewBoxAnnotatableProps
                 return focusSpeed;
             }
         }
-        this._initialScroll = NumCast(doc.y);
+        this._initialScroll = NumCast(this.layoutDoc._scrollTop);
         return 0;
     }
 
@@ -241,8 +241,10 @@ export class WebBox extends ViewBoxAnnotatableComponent<ViewBoxAnnotatableProps
             iframe?.contentDocument.addEventListener("pointerdown", this.iframeDown);
             this._scrollHeight = Math.max(this.scrollHeight, iframe?.contentDocument.body.scrollHeight);
             setTimeout(action(() => this._scrollHeight = Math.max(this.scrollHeight, iframe?.contentDocument?.body.scrollHeight || 0)), 5000);
-            if (this._initialScroll !== undefined && this._outerRef.current) {
-                this._outerRef.current.scrollTop = this._initialScroll;
+            const initialScroll = this._initialScroll;
+            if (initialScroll !== undefined && this._outerRef.current) {
+                // bcz: not sure why this happens, but if the webpage isn't ready yet, it's scroll height seems to be limited.  So we need to wait tp set scroll location to what we want.
+                setTimeout(() => this._outerRef.current!.scrollTop = initialScroll);
                 this._initialScroll = undefined;
             }
             iframe.setAttribute("enable-annotation", "true");