I offered a simple fix: delay notifications on all except the active client for 30 seconds, if a read reciept gets triggered from the active client then cancel the timer. I couldn't even get anyone in the team to even look at my solution 3 years ago.

Not sure why this feature keeps getting defered for "just about to land and things might be better after" server-side features (see how it has 7 out of 9 "dependencies" resolved) when none are needed.

I've had a couple of friend actually give up on matrix due to this. I also have to keep my phone on silent or else I can't be chatting on matrix without the constant bzzzing.

I'm also amused about the ever growing (currently at $760) bounty on this feature.