Format Properties "Close Button" being ignored

[GraeagleBill]

I have an app wherein I can't get the "Close Button" to appear. (See 1st screenshot)



And here is a screenshot of the form's "Format Properties":





What am I missing?

Thanks,
Bill

[June7]

Very odd. Cannot replicate issue. When I set ControlBox property to Yes, the X close is visible.

Is this for every form? Reports? Tables and queries show it?

[ItsMe]

I have had that happen to me before. Not sure why it happened. I think I just rebuilt the form.