Firefox Android peg̃uarã Tekoha Aty

You know, for android, people can still choose the 3 button plan, which are background, home and return.

So, previously, If I long press return, firefox would push up a list of history pages of the current tab page, I can select to go back to any one.

But recently I found this function have disappeared. Is this function canceled, or just a bug and there's way to fix it?

I dont understand why my accounts.firefox.com page is in russian and there is no language selection. Only on Firefox Android, everywhere else its Lithuanian as per device language. This is driving me crazy.