I have the same ‘black menu background’ bug in menu drop downs. (Ubuntu 16.04 LTS)
Desperate for someone to post any more help on this issue - I like the app but I’m finding it very very hard to use (what with blacked out menus and all!)
Incidentally I don’t get the option to switch to the light theme (is ‘light theme’ only available on the ‘paid for’ version I suspect). Even so, the basic app does still have this nasty bug.
Can you help guys!?