I reverted back to the previous kitchen 20226 because I use the touchflo and the last time it worked was on the 20226 kitchen and I wanted to see if it was the OEM or something else causing the problem in the new kitchen.
I am seeing the exact same thing now on 20226. Finger scrolling doesn't work at all. Tap - wait - and drag also doesn't work. I am going to try to dig out an older oem of touchflo and see if that helps...

I installed buildos from scratch yesterday so all the oems are the newest ones released.