Just to round out this thought process… I have had the Ruckus TAC close the case looking into this issue as I have not been able to reproduce the fault with any of the three 2015 Macs that I've been testing with.
These have been running 10.15.4 and 10.15.5.
Since upgrading the Ruckus AP's to firmware version 220.127.116.11.698 the issue has not manifested at all.
While it's not the same as actually getting an answer… with neither my test machines nor the fleet of 700+ student owned devices having this problem any more… I'm calling it solved and I'm as confident as I can be that it's the Ruckus AP firmware update that fixed it.
I can't comment on a fix for unleashed AP's, because I'm not in a position to test, but Ruckus released Unleashed AP version 18.104.22.168.212 on 27th Oct… which is newer than the SZ firmware I'm running.
So maybe try it and see?
I was just curious if they would have acknowledged across the board other than just try it and see if it is corrected.
We have updated a few with mixed results. I can not say for sure about the client's OS being updated or not