I somehow activated the bookmark feature in Studio 2019. I find it annoying because every time I open a document in editor, a message appears and asks something about deleting other bookmarks. I always choose to delete them. "Automatically re-open previously edited documents" (which I suspect was the original culprit) is unchecked in File > Options > Editor. However, bookmarks continue to be created. When I open the bookmarks pane, "Remove bookmark" is grey and therefore unaccessible.
All I want to do is deactivate this feature forever. I don't find it particularly useful. Ideas?