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the _render thing don't help too, and the solution to call the original XoopsFormDhtmlTextArea is problematic too, because the hack's changes are in /class/xoopsform/formdhtmltextarea.php ... so too many double files will be there.
I figured out a few things though: when it sends the data without the "empty description field" warnings - it's simply because the data didn't enter the field from the database in the first place (which is the reason that same record is waiting for approval @ the admin)
and when I change it back to:
XoopsFormDhtmlTextArea(_MD_DESCRIPTIONC, $description, $description, 10, 60,'');
it loads the data from the database, but don't save it like it should - due to the fact that the "NAME" of the field is not the right name, and it sends the "description with no data....
so the only weird thing is why it loads data only if it's "$description" and not "description" .....