Gestures not working

[fosh]

So when I try to use Google gestures I can't get the back button to work. When I try to increase the sensitivity the app crashes. Every time. 

[Koga]

same problem here, I reported it to Samsung

[SamsungUSABetaTeam]

Please try clearing the system cache and rebooting your device.

If issue persists, please send us an error report with screenshots from One UI Beta App (Beta Feedback -> Send feedback-> Error Reports -> "Select Category" -> Input frequency and Description" -> Send (Top Right Icon). We appreciate your help for supporting beta program.