Tried this out for a couple hours today, I can report that everything seems to work on on my C6506, so any issues you have with the ROM are on your end. Make sure to wipe system in addition to data and cache, I've had issues with some ROM zips not wiping system and causing instability.
Personally I don't feel like setting everything up again so I'm going to restore a nandroid of Lungo, but this is a pretty good ROM overall.
One thing I really liked is that I can set the animation scale to .75x, wish there was some info about it somewhere so I could mod it in to Lungo.
Current: Xperia ZL C6506 + CM11 w/ Tap2Wake
Previous: Galaxy Exhibit II 4G w/ CM11