touch in sim

I'm returning to development after a few months hiatus, and am not sure if this is me or an issue with the Sim on Mac?

It seems that a screen tap is raising the onKey event (with a value of 255) instead of the onTap event in the sim.

Testing on VA-HR in sim.

When my app is deployed on a VA-HR it runs OK, but in the Sim any mouse tap or gesture raises onKey in Ui.behaviorDelegate.

Is there something I'm missing?

 And just updated to 6.2.1 with the same result