I was using your great module for about a year now. I upgraded to Sony Android 5.1.1 recently, restored module version 1.0.3 with Titanium Backup, activated it and rebooted.
After reboot, it didn't work. Window of module appeared, as if it was working, but there were no buttons on it. I tried wiping cache, but it didn't work.
I deleted it, and reinstalled from Xposed repo, after reboot, it it working good now.