Can Panel's modal not disappear if I click outside of it?

The Panel’s defaulf setting for modal is that if I click area outside of the modal, it will disappear, but this is quite undesirable feature, could anyone tell me how to disable this feature, and the only way to close a modal is via its close button. Is there such options in Panel?

You could use the new FloatPanel widget instead. It will only close if you click on the close button.