I am on a Mac using Big Sur 11.5.2 and use the latest version of Illustrator 26.1.
When I click and drag an object I randomly get a plus sign inside a green circle along side the cursor. When I release the mouse the object boomerangs back the the original position. BIZZARE! When I try again it typically behaves normally, but not always. This is very annoying at times. Any ideas on how to stop this from happening?