Hi,
I have run into a problem I don't understand.
I have used RSForm!Pro for years and have never had this problem before.

I have downloaded and installed a RSForm!Pro on a new site, and on this new site I cannot save the form fields as soon a they contain any code. Any field without code is fine, textboxes, dropdowns, etc, but when it contains code nothing happens when I click on the save button. Actually I have to refresh the browser to make RSForm!Pro work again.

An example is this simple piece of code that I put in the "Default Value" in order to populate the field with the users name:

//<code>
$user = &JFactory::getUser();
$str=$user->name;
return $str;
//</code>

Without this code, I can save the form, but not when the code is present.

I have compared settings with my previous implementations (that work fine) and the settings are identical.
I'm using Joomla 4 and I have tested both with PHP 7.3 and 8.1.

This is driving me nuts that I can't understand what's wrong!

Does anyone have any idea what this might be? Probably something simple - but what?
I would be very grateful if someone could point me in the right direction.

/goran