URL: https://www.youtube.com
Browser / Version: Firefox 64.0b4
Operating System: Windows 10
Tested Another Browser: Yes
Problem type: Something else
Description: White vertical bar on edge of second monitor when full-screened in YouTube
Steps to Reproduce:
I can reproduce with these steps:
- Have a dual monitor setup
 
- Open Firefox
 
- Navigate to YouTube
 
- Open any video
 
- Toggle fullscreen at least two times
 
Expected results: YouTube enters fullscreen mode without interfering with the monitor it isn't active on
Actual results: A white vertical bar appears on the second monitor
Temporary fix: Exit fullscreen mode in Firefox, then re-fullscreen. The first attempt at fullscreening a video should work as expected, but any subsequent will have the same bug until Firefox is returned to windowed mode again.
Here is a recording of the issue: https://i.imgur.com/80Q7dza.mp4

Browser Configuration
 
From webcompat.com with ❤️
               
            
URL: https://www.youtube.com
Browser / Version: Firefox 64.0b4
Operating System: Windows 10
Tested Another Browser: Yes
Problem type: Something else
Description: White vertical bar on edge of second monitor when full-screened in YouTube
Steps to Reproduce:
I can reproduce with these steps:
Expected results: YouTube enters fullscreen mode without interfering with the monitor it isn't active on
Actual results: A white vertical bar appears on the second monitor
Temporary fix: Exit fullscreen mode in Firefox, then re-fullscreen. The first attempt at fullscreening a video should work as expected, but any subsequent will have the same bug until Firefox is returned to windowed mode again.
Here is a recording of the issue: https://i.imgur.com/80Q7dza.mp4

Browser Configuration
From webcompat.com with ❤️