Apple Pencil issue with Classic Whiteboard

[jaybeekay]

I use the Classic Whiteboard on an iPad Air. After updating this week to version 6.2.3 my Apple Pencil doesn't write smoothly on the screen. In contrast, the stylus works properly in other apps. It even works properly in the newer Whitboard, but I can't use that option because I can't see the other participant. Has anyone else experienced this Apple Pencil problem?