Actually whole my class faces this issue who are on laptop(bcz. I haven't used mobile app). So, when you are about to hit reply in the "show conversation zone" and suddenly one another messages popup and says "this person has replied in which you're in", I mean I know that she/he has replied because I can see. And suddenly you are disabled for few seconds to reply and even if you have selected the reply box you can't see what you're typing the whole time.