What they still have listed:
- in-call mute
- HDR camera
- some quicksettings buttons don't always work
I recall bluetooth going all whacky with major feedback in the midst of a phone call. There were a few others that don't come to mind at the moment. I had tried a few others after it.
What's disappointing, though, is that it hasn't been updated since Nov 13th, 2013.
Bolded is a dealbreaker. But my Gummy does take HDR.