Adding any argument prevents Path Selection dialog from showing

[eugenesvk]

With these settings when I click Create App I get the regular path selection dialog

However, if I add any argument like so:

and then click the same Create App button, I don't get such a dialog, but not that the window title changed to "Select destination"

Removing the argument doesn't fix it, I still get that hanging title, but no dialog.
Restarting the app fixes it unless I add an argument..

Platypus 5.4.1 on mac 10.15

[eugenesvk]

Found it's a duplicate