It seems that support for disconnect an USB device from another computer has been dropped in v5.3.4
I tried to update the server, but no chance ...
I had to downgrade to v5.1.4 which is the one I used before, to get this feature back.
Setup is Raspberry Pi 3B+ with optimised server build and clients are on MacOS several versions from High Sierra to Mojave with client version 5.3.4
Didn't try with clients on MacOs 11 to 13
Can you fix this please ?