Full screen mode not available
After I have newly set up my computer, I have in Vivaldi on YouTube when switching to full-screen mode below left constantly the note "Full screen mode not available". But the full-screen mode works and with a left click of the note is gone, but it sucks. I have disabled all extensions and settings looked in the Vivaldi, but found nothing. Who know what to do?
You didn't tell us anything about your system or your version of Vivaldi.
Maybe the extension recommended in this thread will help.
System: Windows 10 x64 Anniversary Update (1607, 14393.187)
Extensions: WOT, Ghostery, Adblock, Magic Actions for Youtube
It seems to be a bug. I have noticed, that the note appears only, when i set the standard website zoom to 120% (Tools –> Preferences --> Websites --> Standard Website Zoom). When the zoom is set back to 100%, the note did not appear in fullscreen mode. I have reported it.