Are you facing this issue with chats on Riot itself or as a bridge to IRC ?

Because as a slack replacement, riot is pretty cool (and there some redesign happening ). Most of the criticism is around its IRC bridging, which I agree is a little unstable. But let's face it - nobody else (slack et al) even tries.

Only with the IRC bridge, which is the primary use-case for me since so much of my existing community chats are on IRC still. IRCCloud also bridges to Slack, so I get both in the same (synced across devices) interface.