Toolbar not showing with ThinOS 9.3.1129

I cannot get the toolbar to appear again with ThinOS 9.3.1129

We have a single Dell Optiplex3000 with ThinOS 9.3.1129 installed on it. This connects to a PCoIP host card in another PC. This is a one to one connection. Partly for this reason, I would like to show as little of ThinOS as possible.

With the Admin Policy Tool I have disabled the Toolbar under Personal Settings by setting its value to 0. The information tooltip says: If you set the value to 0, the toolbar will be disabled if a session is active.

That is indeed exactly the behaviour I want to achieve. Only now I can't get the toolbar to appear again.

I have tried unplugging the network connector from the machine so that the session is broken. Only then the whole screen is blank. If I move my mouse to the left or right of the edge of the screen or if I press the Windows key, no toolbar appears.

I have tried different shortcuts with ctrl+alt and the arrow keys. And also just smacked the keyboard to get something to appear.

The only thing I get to see is the "Connection manager toolbar". But then the normal toolbar stays away.

It seems that something is not quite right.