Remote Debugging doesn't start with 2019R3.1

When I try to start my app in remote debug mode on macOS 10.14.6 to macOS 10.15.3, I can see “Launching Application…” on the Side, but nothing will be copied to the remote machine. This problem exists with any project or example projects. With release 2019.R3 it works without any problem. Remote Debugger is 2.3.

Console log:
Process Xojo.646 Released PreventUserIdleSystemSleep “Sending to remote stub” age:00:02:30 id:4295006032 [System: DeclUser kDisp]
27366555: RECEIVED OUT-OF-SEQUENCE NOTIFICATION: 0 vs 791, 513,
/Applications/Xojo 2019 Release 3.1/Xojo.app/contents/Framework/IDEUtils.dylib:
ignoring key bindings due to unknown OS version

After a reboot, remote debug is now working again with 2019R3.1