Using new Mac OS 10.5 (Catalina) Sidecar feature, Corel Painter won't recognize Apple Pencil tilt. Tried both 2019 and 2020 versions.
Apple Pencil pressure is recognized. I must adjust pressure curve inside Painter, but it works perfectly.
Other Mac art software recognize both pressure and tilt using Apple Pencil: Krita, Artrage 6, Krita, Clip Studio Paint, Paintstorm Studio. Phtoshop currently won't recognize Apple Pencil, a software update will be released at 10.5 launch.
Info about Sidecar: this is a new Mac OS 10.5 feature which converts your iPad (under iPad OS) as a Mac OS extra monitor, allowing the use of Apple Pencil as input, using Bloutooth and/or wired connection. This feature and Mac OS 10.5 & iPad OS are currently on beta stages.