We ran into the same issue as well when testing OS 9.3.1129 where after signing off Windows you get dumped into the ThinOS desktop now instead of getting signed completely out.
Thought it was our WMS settings but looks like it’s not just us having this happen.
We’re sticking with 9.1.6108 for now.
I am really dissappointed with how many bugs ThinOS 9 stil presents after over a year since version 9.1.
We’re 2 months in on a support case to get our finger print readers working with Imprivata on OS 9 with an Optiplex 3000. We’re at the point where we’re looking at other hardware vendors now.