I did few tests on the Reply Ban option, there are two issue that I found: 1. There isn't pagination or some other way to limit results. I added more than 20 users and it shows them all. This is possibly an edge case as in normal conditions there shouldn't be so much banned users, but it may happen in long-time discussions. 2. At some point the Reply Ban overlay's became partially hidden, And I couldn't scroll within it.