I don't know if this will help anyone else, but I just discovered that gestures on my Bluetooth Trackpad work fine if I log out/in. I also noticed that everything works if the Trackpad is turned on before LightDM starts up.
I don't know if this will help anyone else, but I just discovered that gestures on my Bluetooth Trackpad work fine if I log out/in. I also noticed that everything works if the Trackpad is turned on before LightDM starts up.