Would anyone know why my server windows keep re-arranging themselves?

And how can I disable it?

Could you be more specific?

Well, when I'm chatting, I notice my server windows re-arrange themselves in the treebar.

So something like:

[-] 1 (Active)
[-] 2
[-] 3

Becomes:

[-] 1
[+] 3
[+] 2


They usually collapse and expand.

Okay, I managed to take two screenshots. (Before and after.)

Before: Here.
After: Here.

(Note: These images are about 120~ KB a piece. - I just though I'd point out.)

I'm having the exact same issue.
No @ windows are open at the time.
I'm only using my own scripts, so I know what's in there - nevertheless, I unloaded both files there are, but that problem still persists.
Status window entries in the Treebar collapse or switch places for no obvious reason. It seems to be the same IRC network's status windows that are affected again, even after restarting mIRC.

It's not been like that with mIRC 6.31 - I had just updated for 6.33 when it started acting like that. Maybe that gives someone a clue to what's the actual cause of this.

I run 6.33 and havent seen this happen at all...

any specific moment when you notice they change order?

Mine are random, happen when I connect to servers, when I set/unset away, open a @window, toggle between active windows.

Thanks, I haven't been able to reproduce it yet but have pinpointed a line of code in the sorting routine that is probably the cause. This should be fixed in the next version.

Yeah, I haven't noticed any re-arranging since I updated to 6.34.

Thanks. ^^