There is an unsaved comment in progress. You will lose your changes if you continue. Are you sure you want to reopen the work item?
If I take your sample application, wrap the grid into a tab container with two tabs, putting original grid in one tab, and leaving the other blank for demonstration purposes, the video will not render if it has already been shown and hidden once. Change
tabs back and forth and you will see what I mean. I spotted this issue in my application when I was trying to have collapsible panels, but the TabControl exposes the issue easily.