Hello,
I reported this a while back. Then it didn't work (for me and some other people) on both Windows and RPI KStars clients.
It has been working very well for quite some time now on RPI client (which I mainly use).
Tried it on Windows client (v. 3.2) three nights ago - all worked except for this polar alignment issue.
Last night updated to v. 3.2.1 - same issue remained.
Symptom - start PA procedure, 3 rotations, select star, next, press "refresh" every 1 sec (tried different refresh intervals, different exposure times - didn't help),
-- it doesn't refresh at all. Takes a frame and then the log shows "cannot capture while CCD exposure is in progress. retry in 10 sec".
At the same time, framing in the Focus module works, looping in the Guide module also works.

Is this just me and some of my settings or this really is a bug?
My guide/alignment camera is ASI120. Main camera is ASI294.

But again, it works great on RPI client. Would be nice to have it working on Windows too...

Thanks!