No I don't know if this is a problem with UI7, but I'm getting issues now that I didn't have before.
Single tapping is not getting the same responses that I've been used to.
Checking the settings, single tab duration (top recognised as a tap, can be set between 0.1 and 4 (yes 4!!!!) seconds.
My single taps are more like 0.04.
Thing is, single tap duration cannot be set below 0.1 seconds - no idea what this was before UI7, but I didn't have problems before.
* Copied to Samsung Support