If I click on the Save icon, it doesn't save. It only saves if I exit the document and asks if I want to save.
What happens if you try to save as a different name?
It saves it, but if I'm editing a file and want to save my changes as I go, I can't, unless I Save As or exit.
What version of FM? Are you all patched up? Where are you saving to? Any Source Control at play? Permissions?