BetterButtonNestedForm does not close after a successful submission

[Taitava]

So I use a BetterButtonNestedForm and when I open it via a button, make some changes to the field values and submit the form, my custom action gets executed correctly and my changes are saved. The page behind the form popup get's reloaded/updated via AJAX, but the form stays open and only goes away when I click the X button. Edit: Actually, the page does not reload via AJAX. Only the popup form content does. But when I hit F5, I can see that my changes are saved correctly in my dataobject, so at least that part was correct :).

I'm using SS3 and the released version 1.3.14 of this module.

Thans for helping me! :) Do you need some example code?