The iOS client regularly loses large swaths of messages, with no clue that they’re missing except a time gap. The only way to fix it is to log out and log back in. I imagine a large percent of users are just oblivious to the missing messages. Me and others have been hitting this bug for at least a year at this point, probably much longer. Is anyone at Slack aware of this? Missing messages should be a priority 1 bug for a tool advertised as a replacement for business email.