I like to file bugs about any software or service I use, too. Just did a quick check, under my current email I have 101 bugs filed for Chromium and 91 for Firefox (which I no longer use extensively, so they're mostly years old). Since I'm more of a power user than dev (I don't work in software or CS field) my "hit rate" isn't as high as the author, but I'm still proud about it.
One unfortunate thing is that browsers are probably one of the only remaining major services/applications (that are not directly developer-oriented) which you can report bugs and actually get some tractions, or even get them fixed.
Try to report a bug about MS Word. Or Spotify. Or Google Maps. I've tried all of them and it's safe to say nothing happens no matter how obvious the bug is or how easy it would be fixed. I don't even know if the "feedbacks" I sent ever reached the developers.
For example, recently Google Sheets has a bug that if you input data in the formula bar (instead of directly in the cell) and then press Enter, it somehow enters the edit mode of the next cell, instead of just highlights it like if you edit in the cell. This is driving me crazy and I've filed multiple feedbacks about it, but I have no hope to see it getting fixed any time soon.
It can't be a coincidence that the three apps you mention are all closed source, while both Firefox and Chromium are (at least nominally) open source.
I'd go further than that and say that it's not just not a coincidence, but that I've had the opposite experience in that the vast majority of user-facing programs I've reported bugs against have gotten better responses than anything I've ever submitted to Firefox. The difference is, of course, that every single program on the computer I'm typing this from right now is libre / open source software.
I can't reproduce your google sheets bug, it always highlights the next cell for me (not in edit mode) regardless of whether I input data into the formula bar or the cell. Are you sure it's not an extension or something?
Oh God, after reading your post, it suddenly struck me that maybe I should try using a different Google account, even though I don't really have anything special in my main account.
I registered a new account, and voilà, it suddenly worked!
I compared all the options and couldn't find anything that would cause this until I discovered that my main account's Tools > Accessibility Settings had "Turn on screen reader support" enabled, for which I have no idea why.
I turned it back off, and the issue immediately disappeared.
To be fair, I think enabling this accessibility option shouldn't cause such a bug; but for now, I can finally use it again.
I can reproduce it with Chrome, Firefox, both with no extension.
On three computers.
In case it was not clear, here is the full STR.
1. Click on a cell.
2. Click on the formula bar.
3. Type something, Press enter (you can even directly press Enter).
Expected: the next cell is highlighted but not in edit mode. So you can use arrow keys to move highlight around.
Observed: the next cell is in edit mode; you cannot move arrow around.
To make it worse, sometimes (but not always), if you press enter AGAIN, it would go to the next (the third one) and STILL in edit mode; you need to press enter AGAIN, which makes the highlight move to the fourth cell, only then it properly exists edit mode.
The bug is also reproducible with Esc (cancel change):
1. Click on a cell; 2. Click on the formula bar; 3. Directly press Esc.
Expected: exit edit mode
Observed: you are still in edit mode. You have to press Esc again.
Try to report a bug or request a feature on the LLVM issue tracker. It is like shouting into the void. They have so many open issues GitHub apparently refuses to count them, it just shows "5k+". They have nearly two thousand pull requests waiting for their review. It's insane.
One unfortunate thing is that browsers are probably one of the only remaining major services/applications (that are not directly developer-oriented) which you can report bugs and actually get some tractions, or even get them fixed.
Try to report a bug about MS Word. Or Spotify. Or Google Maps. I've tried all of them and it's safe to say nothing happens no matter how obvious the bug is or how easy it would be fixed. I don't even know if the "feedbacks" I sent ever reached the developers.
For example, recently Google Sheets has a bug that if you input data in the formula bar (instead of directly in the cell) and then press Enter, it somehow enters the edit mode of the next cell, instead of just highlights it like if you edit in the cell. This is driving me crazy and I've filed multiple feedbacks about it, but I have no hope to see it getting fixed any time soon.