[oldmariner]

> It is especially terrible if you are not in the habit of closing open tabs and just open new ones.

I just closed a bit over 2,000 tabs on my old phone because I was switching phones. I recall reading a couple of other comments here in HN and seeing a couple of comments in reddit of other people having thousands of tabs open.

Slow and buggy has NOT been my experience.

I use uBlock Origin addon though, maybe that's the difference? I bet resource-hogging ads could be an issue.

Edit: I also had "studies" turned off. Perhaps you were in a study that was testing something that caused those issues? (That's why I don't like default "studies" or A/B testing.). Or maybe something else (physical or software) on your phone is damaged/defective, perhaps even your installation of the Firefox app got borked?

[mattmanser]

No, it's happened on two different phones over the last 2+ years. And two completely different phones, Xiaomi and Pixel.

I do wonder how you know you closed 2,000? The UI displays an infinity symbol over 99 tabs. If you had so many open, most of those would have been moved to inactive. The inactive tab section doesn't have a count and has a button you can click to close all.

Makes me sort of wonder whether you are actually using it.

[oldmariner]

There's an option to turn off the inactive tabs feature.

Trying to "share" all of them will crash Firefox, so I manually select 100 and share those, then close those, repeat 20 times (which is how I know how many tabs I had open).