Firefox scrollbar bugs

[TravisCardwell]

I ran across scrollbar bugs on Firefox. I see them on Firefox 88.0 (64-bit on Arch Linux). Here are the steps to reproduce the bugs:

1. Navigate to the demo
2. Click one of the images in the top row
   • The spotlight UI is shown in the whole document area.
   • BUG: The browser shows a scrollbar. Expected behavior: there should be no scrollbar (confirmed in Google Chrome).
3. Click the full screen icon at the top right (second icon from the right)
   • The spotlight UI is displayed full screen.
   • The scrollbar is no longer displayed.
4. Press escape to exit full screen.
   • The spotlight UI is shown in the whole document area.
   • The scrollbar is still not displayed.
5. Click the close icon at the top right (right-most icon)
   • The spotlight UI is closed, returning to the demo page.
   • BUG: The demo page no longer has a scrollbar and cannot be scrolled. The page needs to be reloaded to bring the scrollbar back. Expected behavior: there should be a scrollbar and the page should be scrollable.

[ts-thomas]

Thanks a lot, that was a perfect bug report. I didn't notice this strange issue with Firefox. It should be fixed now in v0.7.62. When exit Fullscreen the fullscreen icon disappears, I will fix that also, but that's not as critical as this issue you've posted.
Thanks a lot!