I have this annoying but in my project with a dropdown list.
When I open the dropdown list on desktop, it goes like it should.
When I go to tablet or mobile and open the dropdown list, it also shows how it should.
However, when going back to the desktop breakpoint, and opening the dropdown list again, it makes it look weird and this is annoying, I can only undo this by refreshing the page again, but this undos any changes.
See the video below:
(before switching breakpoints)
(after switching breakpoints and opening menu)