I am using version 0.19.53 on windows 7 64 Bit. I also have same issue as finsarg here Dead Tabs and the tearaway tab issue and
It’s happening very frequently now that tabs become unresponsive if not used for a few minutes and then I can’t close them until i kill and restart the browser itself. When try close all tabs to right it closes everything and is very annoying to loose the work. I was working on writing a large regex and lost the work multiple times.
This is a wonderful browser and we love to use it but such issues are deal breakers and should be fixed quickly.