From time to time, SL will drop entire posts from chat, leaving a gap in conversations.

Example: I was in a group chat and had my alt on at the same time, watching the chat in both viewer windows. Everything worked normally, till someone posted a message that I saw, but my alt did not see.

Example: just today, in an IM conversation with a friend, I asked a question and waited for an answer. After a good 20 minutes they messaged with "Are you ok?" because from their perspective, I'd gone silent. I copied and pasted our chatlog back to them, and they said "Oh, I never got that last message" and copied their log back to me, where it was indeed missing.

Example: A long conversation with another friend, where (I thought) I was responding to everything she said. Suddenly she types "I guess you're AFK or not interested in talking to me tonight, so I'm going to log and go to bed". Fortunately I had her on Discord as well, so I screencapped my IM window and pasted it to her there. A long pause, then she screencapped her own and sent it to me...and everything I had said was missing. A relog on her end fixed it.

This lack of reliability causes all sorts of problems, from needed information failing to reach those who need it, to hard feelings because someone thinks you're ignoring them because they never got your answer/reply, and so on. Out of ALL the online venues I've ever been in that had a chat function (games, IM apps, etc), this is the ONLY one that has done this to me, and the only one that does it as far as I'm aware...and it's done this for the entire time I've been in SL. There really has to be something that can be done to fix this. Never mind new chat features or enhancements for now, just make it reliable