Chrome Version       : 70.0.3500.0
OS Version: 10903.0.0

What steps will reproduce the problem?
1. The chrome://flags/#enable-surfaces-for-videos flag must be enabled.
2. Go to https://www.youtube.com/watch?v=hflnlhJz554
3. Right-click twice on video and click "Picture in picture"

What is the expected result?
Video interstitial message should not be truncated.

What happens instead of that?
Video interstitial message is truncated.
 

Deleted: Screenshot 2018-07-25 at 5.46.48 PM.png 50.5 KB

	Screenshot 2018-07-25 at 5.46.48 PM.png 50.5 KB View Download