[Sylos]

Can you not collapse them at all or do you mean that they uncollapse after a refresh?

The latter might have to do with HN storing this collapse-state in a Cookie/localstorage/similar and Firefox Focus throwing these sorts of things semi-regularly away to protect privacy.

It does not throw away the login-Cookie, so I'm not entirely sure how it works. They might even have a whitelist or (in this case erroneous) blacklist for it.

[firefixfox]

It doesn't display the button.

[Sylos]

Really not sure then. Maybe try toggling some of the tracker blocking in the settings and see if that changes anything.

It does show the button for me on the Android version...