Forum Discussion
Error when saving properties even if filled out
I came in here looking for a similar problem that I think is related. In my case I have a simple modern list with a column in it to hold numbers. I can go into that item, and change a 2 to a 3, and watch the darn thing change back to a 2 again right as it waves a little "saved" at me when I take my focus away to another field. But if I go land back in the field a second time, the 3 will pop up again the way I want it to be, and it may or may not tell me for a second time that it has saved, but the 3 will stick. If I don't actually go back in to check the field, that 3 will still have stuck anyway, but I'm paranoid and want to make sure it's there.
So I would agree there's definitely something buggy going on with the Edit Item dialogue box as it relates to editing fields of data and the save-on-the-fly process. I've tested with a couple of Win10 machines both IE11 and Chrome, all same buggy behavior.
A suggestion for your scenario where it's saying can't be blank ... try landing back into the field again for that second helping of field-level "save" and see if that helps.