Firefox has image rescaling that doesn't blow chunks at non-integer scales.
For example scaling up the page 120% to be able to more easily read text that the designer made too small doesn't turn all the images on the page into a blurry mess like it does on Chrome.
I've tried reporting bug reports to the Chromium project, but they can't seem to understand the concept and keep misfiling the reports as duplicates of irrelevant bugs and closing them as fixed without having fixed the problem.
Constant crashes that lose open tabs, layout glitches where display gets offset from ui trigger points (including on this site), downloads that just fail / don't work.
You'd think that this would have me stop using it, but I really don't want to use Chrome/Brave/DDG so have just been putting up with it.
Like most small-backing Chromium clones it's usually ~2 months behind on patches (normal and security) and the published source is about ~10 months behind. Being effectively closed for the release version and very small from a development side it does wonky things like redirect your "Google" searches through their servers since they don't have proper search agreements.
I.e. it's basically "an interesting Chromium clone maintained by a couple of folks out of Estonia". If you're cool with that it can be a nifty browser, for many that just makes it to unproven to dump access to their entire online world into.
Firedox on android has a lot of issues.