Subsequent calls to show makes it unhideable.

[PCcunha]

If in a situation the script calls show function with an already dialog visible, there is no way to hide it. Even with subsequent calls of hide();

[obia75]

+1 for this. When already having a modal popup visible it's possible to show the waitingdialog but not to close it

[action0jackson]

@PCcunha , @sugardad - A workaround that I used was to replace the line in the function constructDialog $dialog.remove(); with return $dialog; This worked for my scenario.