DisplayFusion version 12.1.1 also tried 12.2 Beta 5
Microsoft Sticky notes as downloaded from the Microsoft store here - https://apps.microsoft.com/detail/9NBLGGH4QGHW?hl=en-gb&gl=IE&ocid=pdpshare

When using DisplayFusion, sticky notes are blanked out as per the attached screenshot. They briefly open correctly, then the window is painted completley black (add your own jokes or Rolling Stones references here).

The correct behaviour is that the sticky note should open and the user be able to enter text.

Disabling DisplayFusion by exiting it from the notification area restores full functionality to Sticky Notes app, no more black notes.