I've tried it with several devices. I use arcade controller boards for my overhead panel but I also assigned buttons to my Thrustmaster TCA joystick.

The result is always the same, the button presses don't have any effect and after I restart LINDA the assignments are gone.

@3than I don’t understand how device assignments can be lost? Do you devices have serial numbers? See Setup Joysticks in square brackets.

Can you read and follow the Fault Diagnosis Procedure under LINDA Support and email me the logs together with the config-hid.lua files from /linda-cfg/aircrafts/{your aircraft} and /linda-cfg/system (before and after restarting LINDA ie. When assignments are lost). Please assign functions to buttons and save.