If you are still experiencing this issue (as some of you are), please respond to the email that has been sent to you.
While the issue has been fixed for certain scenarios, it looks like there are some remaining where it is still NOT working as expected. We look forward to finding a complete fix for this issue.
Adobe InDesign teamMoriah commented
I've also been having issues with the save, save as and undo functions. It happens on selective documents.
So far I've been able to save as an IDML, restart InDesign and the functions appear again, but it would be nice if I didn't have to do this.