I use it on my phone now as I don't support AMP at all, and it still has some weird issues compared to Chrome. The main annoyances for me are:
- Kinda hanging occasionally when you have 40 or 50 tabs open. Sometimes have to close and reopen it, sometimes it'll start being responsive again. Never had these problems in Chrome.
- Never ending loading bars. While it might be true that some script hasn't loaded, I don't need to know and it's just annoying to have a half complete blue bar at the top of the page. It adds to the perception that there's something wrong, and it feels like somethings wrong with Firefox Mobile not something's wrong with the web page.
- I want to pull down to refresh. I know it's silly but 6 months on I still do it out of muscle memory, and then remember you have to click the menu, then click the refresh. Pull down is just great, far superior to their solution.
- Thumbnails of old tabs that are still open get flushed, never happens in Chrome. What it means is that you can't scan the tabs for an old open tab you want by the look of the thumbnail. for example, I have a jambalya recipe I tried and like but haven't got round to transcribing and every two or three weeks have to hunt through the damn tabs to find it.
- Their tab solution is not as nice as Chrome's. I really don't like the layout, or find it as usable, even months on. When Chrome initially switched theirs I was sceptical, but really learned to love the concertina style.
I am also finding it quite hard to get proper ad blocking working. It's working for some sites, but no matter what I do I'm still getting google ads and now certain login pages hang completely including some google driven ones. Why is it so hard to do? I'm pretty competent with computers after all! (Yes, I've turned off things like acceptable ads and checked the whitelists).