Issue Summary

When scrolling on a whiteboard, some situations may cause the browser's default scroll behaviour rather than the intended whiteboard scroll. This can reliably be reproduced with a Youtube embed when using a trackpad, but we have also had an internal report that something similar happens in other circumstances.

Steps to Reproduce

1. Go to a whiteboard which has a Youtube video embedded (other types of embeds may also be affected)
2. With the mouse cursor over the Youtube video, zoom in using a pinch gesture on your trackpad, or cmd+scroll on your mouse

Expected Results

The whiteboard zooms in, same as if you did this action with the cursor anywhere else

Actual Results

If using a trackpad, the browser window zooms in, making the whiteboard no longer full screen and controls the wrong size. Once this happens, a refresh does not resolve the issue.

If using a mouse, nothing happens.

Workaround

Zoom with mouse cursor not over a Youtube video