As for tab-heavy users, I find FF Quantum to be horrible in this respect, and I keep missing Chrome, which allows a ton of tabs and resizes them, albeit slightly unreadable after ~40-70 tabs, but at least I can see the icon, which is usually enough to find what I'm looking for. FF resizes until ~5 characters of the title are still visible, thereafter requiring "< >" arrows to scroll through tabs... unfortunately if you click one of those arrows too fast (twice in < 1 second), it will skip 10-20 tabs or jump to the completely opposite end(!), which can be frustrating to get back to the tab that is just barely hidden off-screen. I have seen this complaint in forums but still haven't found a reliable workaround other than editing some javascript relating to the default theme (I forget the details)? I have reverted back to tab/ctrl-tab to cycle through tabs.
