That's what happened to me. I think if you don't upgrade to iCloud Drive (and I wouldn't if I had the choice again!), you can turn documents and data syncing off and on and restart and get it to work again. However, I don't see any documents and data syncing option when iCloud Drive is on. And what's worse, for me, when I restarted my phone after I created a new test shortcut, that shortcut disappeared. Also, the shortcuts are not syncing between my iPhone and iPad. Yeesh!