Operating system: Windows 10
Graphics card: GTX 1060 6gb (Idk if this is very relevant lol)
Broken: 2.82 BETA, 689a873029b9, master, 2020-01-15 21:07
Short description of error
Blender 3D shift+RMB "set 3D cursor" not sensing strokes made with the grease pencil nor strokes made with the annotation tool
Exact steps for others to reproduce the error
Add a stroke, hover it with your mouse and press your "Set 3D cursor" hotkey combination (by default Shift RMB).
When doing just this, but when hovering your cursor/mouse over a mesh object instead, the 3D cursor will be set on the surface of the mesh object right where the cursor/mouse is hovering over that mesh/object. As the grease pencil is rather new, Im guessing making this react with the grease pencil strokes were just something that was forgotten when implementing it.