This isn't a VE bug but ...
With google translate and chrome when you choose "always translate" and then hide the translate bar, the look and feel is really WP:en or WP:yourlanguage
When you choose to contribute with VisualEditor, everything is translated : text, button, message but the little "search" in the research box.
Then contributions in different language appear on WP:fr ex : https://fr.wikipedia.org/w/index.php?title=Acrosport&diff=prev&oldid=98352033
A little change in text saves the all translated bloc.
Maybe, the VE edit button should be block with a warning message or the text display for edition should block google translate (I don't know if it's possible) like textarea does.