disable button problem..

Hi,

I'm use modal pop-ups when configuring mashups.
Sometimes the button is disabled even after the modal pop-up closes.
The obvious reason is difficult to grasp.

It does not seem to be disabled simply after the modal pop-up is closed.
If you perform a specific service in a modal popup and the CloseIfPopup is executed when the service is done, it appears that deactivation is maintained (not always, sometimes).
If someone is experiencing similar symptoms, can you tell me why?

My Thingworx information.
[on VM]
OS: Windows 2008 R1 SP1
Thingworx Version: 7.3 SP10
CPU: 4
RAM : 12GB

Thanks