Today we are using floating scrollbars only in the dark theme. They behave quite differently from the regular scrollbars, and since most of the team seems to be using the light theme for development we are sometimes missing bugs (recently https://bugzilla.mozilla.org/show_bug.cgi?id=1415825). We can either remove floating scrollbars or use them everywhere. This was already discussed this in https://discourse.mozilla.org/t/scrollbar-differences-between-light-and-dark-themes/13403 . The general consensus was to use floating scrollbars in the light-theme too. I want to confirm this is still ok and start logging bugs in this direction.