12.2-RC2 synaptics "tap to click"

[2yt at gmx.com]

I use a Thinkpad X1 Carbon 4th gen. After upgrading to 12.2 from 12.1, I
lost  "tap to click" which worked perfectly in past releases. Is this a
know feature change? Is there a new sysctl variable that needs set?

The other synaptics features are all working just fine.

Thanks