Hi Helmut,
We are unable to reproduce the tapping issue (Without GestureRecognizer) in our latest version 13.1.0.26 of Xamarin. We have prepared sample for SfCircularGauge with Latest custom assemblies.
Sample Link: SfGauge_Xamarin.zip
If the provided Sample does not meet your requirement, could you please modify the provided sample and its replication procedure along with screenshots (if possible)? It will be very helpful for us to analyse on it and provide you the possible solution.
Please let us know if you have any queries.
Regards,
Nijamudeen M.