Sorry to hear you are having trouble.
Hi, this is kinda of weird, but seems that CursorFX does something with overlays? Practicly: If I have cursorFX on, rightclick menu from at least steam and object desktop system tray icons open in background (behind other windows). If I close cursrosFX they open again normally on top of other windows.
Can you upload a video of this happening to a cloud drive service and share a link here?
Stardock Support Manager