happen in my game too.

Do you still have the log from a game where that happened?

any clues on what you were doing when it happened?

I had this happen once where I had one agent away from the other 3, he seemed to turn off his rendering when he was at the fog of war radius away from the other agents even though the actual fog of war was working around him.

I have sent the log using the bugreport form on the SR site. Did it work?
It was the last thing that happened before I exited the game using ingame menu.

Edit: it was both my soldier and infiltrator that went invisible at the same time or almost same time.

ok thanks will take a look

I have this as well, it's usually just the one that it happens to. This only seems to occur in enemy compounds and when I got to a beacon outside, agent 1 (who I could only keep track of before because of his shield) reappeared.

This seems to be fixed in SR 10864.
Hard to be sure since I don't know what triggered it but I haven't seen it in 10864.

Unfortunately JUST happened to me. Only thing i was doing was fast travel. When I closed the Mission Control screen, i could see the relay point effect, but my characters were not loaded.