When you edit the script, does the editor have two tabs, one containing your own script and the other containing the jQuery library source? I often had an issue where the @require dependecies weren't downloaded after the update, so the script wouldn't work anymore. The fix was to cut out the @require statement, close the editor, then open it again, and paste the @require statement again. Then GM recognized it as "new" dependency and downloaded the required source code (and opened the dependency in a second editor tab from then on).