When I enter a space the space menu looks like this with an right arrow in front _bx_spaces_menu_item_title_leave_space
When I click on the menu it reads correctly "Join Space"
I had to uninstall mine with the same problem. Not using it now until someone gets it fixed.
Copy " _bx_spaces_menu_item_title_leave_space" go to studio...polyglot...keys...paste it in "search box"...if there is not one...click on create new key...paste it in "key name"...choose module(space)... type "Leave Space" into english box...save.
@Anton L fixed it here https://github.com/unaio/una/issues/4314
the key is wrong? _bx_spaces_menu_item_title_system_leave_group
Should group be space?