Vanishing Minions

I've only seen this since I started 5-boxing. At some point, my four minions will stop following the main. But only on the main's screen. On all the other screens, they are still following. I can run across the entire map, and everything behaves as though they were there; I can cast invisible (for the main) spells with them, etc. But on the main screen, they are still standing back at the last place they were.

Relogging fixes the problem, but it happens once every few hours, which is kind of annoying. Has anyone else seen this?

This generally happens when your client gets out of sync somehow with the server. I've seen it happen frequently but never as often as you are describing.

i get this sometimes when doing daily's another way to fix it is to seperate them far enough so that when you bring them back together the server has to load them again. take the on that does not see the others on a trip then come back and he will see the rest.

This issue happens quite a bit while on a flying mount. Quickest way to fix is to relog.

Yep, I see this too, though it is rare and usually happens right after something like a zone change, summon, flight, etc.