I think I remember seeing this issue also, sometime back in June, but I do not currently see it.
Background: I am currently testing all possible “upgrade patterns” I can think of. We support iOS 9, 10 and (soon) 11 so I want to make sure that the UX is as smooth as possible when going from twitterkit lib 2 to 3 with the new app version (release date not set yet). The patterns I test, on top of the iOS versions, are if user linked the iOS app to our Twitter app or not, if Twitter app is installed or not… this makes quite a few discretely different cases for testing.
So far I’ve tested iOS 9 and haven’t seen the above problem. Will post back if I see anything.