They do have the permission - I have recently come across the issue myself.
We are on 1.2.1 and are planning to update. This is happening on DEFAULt/vanilla theme as well as our purchased PixelEdit theme.
Below is a screenshot
It highlights like it is going to post but doesnt do anything and then eventually goes back. I have tried Firefox/Chrome and both do not work. I'm thinking something got corrupted and not sure an update to 1.2.2 will fix the issue.