Bot stuck in bugged pt

Hello,

i’ve had this problem several times already. I can’t really tell how this happens and I can’t reproduce it. I setup my chars to invite/accept each other to the pt and leave if the leader is in the training area, so finally they end up in the leaders pt.
Sometimes the bot shows a 1-man-party consisting of another char. It’s impossible to leave the pt and the bot has to be restarted. It leads to one char falling behind because he’s not in the pt.

If it’s a known problem, is there any way to solve it? I notice it happening once every couple day when checking the bots. I couldn’t take a screenshot, but I will provide one next time.
It looks like this: Char Botto5 shows in the party tab that he’s in a pt with only 1 member, whicht is Botto4. The log says “leaving party because leader is not in the list” or something similar every second or couple seconds. Botto5 himself doesn’t show up in the party members list. Botto4 and Botto5 are both not the leader.

Anyone had this problem occuring? Anyone solved it?

Regards.