This is happening to us as well, though it seems anyone doing e-file or K1s are having this issue. The users themselves reported that it breaks after each Lacerte 25 update, same as OP.

The e-file and K1 windows show up in the taskbar, but any options to move or maximize are greyed out. The only option I have to is to rename w25tax.ini for affected users, or paste in working window position settings from an old ini file. As you can imagine this is incredibly tedious for me, and frustrating for the end users.

As these are terminal servers, I've already confirmed that each user's MachineName is different in LacerteHostName.ini. but just for testing anyway, I changed MachineName to random ones, Issue still returns after Lacerte updates.