Pencil 2 misalignment with Sidecar (Mac to iPad Pro)
When I use my Apple Pencil 2 with Sidecar using Mirror Displays, the cursor position is misaligned.
I was able to fix the issue by going to the Sidecar preferences on my Mac. Uncheck "Show Touch Bar" If this is checked. Pencil 2 will be misaligned if this option is checked. For example, if you choose "on the top", secondary display (iPad Pro in my case), will be pushed down and pencil tip/cursor will be higher.
Hope this helps : )
iPad Pro 12.9-inch, 3rd Gen, Wi-Fi, Cell