Hi,
I've noticed a weird behavior launching mate-display-properties. The GUI let me change all the configurations, but the Apply button does nothing (and it seems always active, even if no change has still been made, as in picture).
This behavior is noticed only with a second user, that has autologin in a kiosk-alike mode with another application running fullscreen and it isn't present when logging in as the "first" user (the one with sudo permissions created by ubuntu as default).
I hope this is the right place to ask, so If anyone has tips on how to debug this gui (at least logs, to check what's going on).
I'm thinking of some missing permission, but I'm not sure how to troubleshoot.