While reading or writing post, if up/down arrow button is pressed the screen jumps out to MSG panel and message area has changed to another one (not the
one i'm reading in).
Any one has the same issue?
This doesn't happen for synchronet.
Client software is Termius in iOS.

--- Mystic BBS v1.12 A46 2020/04/29 (Windows/64)
* Origin: Abacus BBS! ---> bbs.abon.us:2323 (1:340/202)

While reading or writing post, if up/down arrow button is pressed the screen jumps out to MSG panel and message area has changed to another
one (not the one i'm reading in).
Any one has the same issue?

I haven't experienced this issue at all. Have you installed any MOD recently to the message area? Is this happening locally only or remotely as well?

--- Mystic BBS v1.12 A45 2020/02/18 (Windows/32)
* Origin: The Underground BBS (1:227/702)