Hi Guys, I am using Firefox Version 89.0, 64 bit and everything was working well until today. For some reason today when I go into "Add-ons and Themes", I can no longer see a preview of the themes I have installed (see photo). It lists the themes by name but doesn't show their picture. How do i get the theme preview back? Also there is one thing I don't particularly like about this new version of Firefox.... when you have multiple tabs open, it's very hard to see which tab you are using. Yes there is a narrow line on the sides and on the top of the tab to make it stand out from the rest of the tabs you are using... but that line is too narrow and hard to see. Also, in the old versions of Firefox, the horizontal line at the top of the tab you were on was thick and it was often white or bright colored (at least in the themes I always used anyway) so it was easier to see what tab you were on.