Drag and drop not working in editor

when I try to left click and drag assets in the editor it doesn’t work. I can’t drag assets from the project window into the hierarchy, I can’t drag assets in the hierarchy onto other assets to parent them, I can’t drag assets into other folders in the project window, nor can I drag assets from the hierarchy into the project window to make them a prefab. It seems like my ability to drag and drop has stopped functioning. I can still select items and see/edit their components, but can’t select them. my cursor isn’t even changing into the “select” sprite when I left click them. I’ve never had this problem before, but I at least noticed it when I downloaded some files from lesson 1 “start your 3d engines” unity learn tutorial.

Try reset Layout of Editor, sometimes Unity bugs on engine level.