Wikimedia Bugzilla is closed!

Including {{#forminput:}} in a form definition itself for two different forms results in one input field not being surrounded by <form></form> elements.

In this specific case, the two statements and their respective output are:

{{#forminput:form=Organisation|button text=add it|query string=namespace=Organisation|autocomplete on namespace=Organisation|popup}} }}

resulting in:

<p>
<input id="input_1" class="autocompleteInput createboxInput formInput ui-autocomplete-input" type="text" autocompletesettings="input_1" value="" size="25" name="page_name" autocomplete="off" role="textbox" aria-autocomplete="list" aria-haspopup="true">
<input type="hidden" name="form" value="Organisation">
<input type="hidden" value="Organisation" name="namespace">
<input type="submit" value="add it">
</p>
<p> </p>
<div id="div_1" class="page_name_auto_complete"> </div>
<p></p>

and on the other hand:

{{#forminput:form=Location|button text=add it|autocomplete on category=Location|popup}} }}

resulting in:

<form class="popupforminput" method="get" action="/wiki/Special:FormStart" name="createbox">
<p>
<input id="input_2" class="autocompleteInput createboxInput formInput ui-autocomplete-input" type="text" autocompletesettings="input_2" value="" size="25" name="page_name" autocomplete="off" role="textbox" aria-autocomplete="list" aria-haspopup="true">
<input type="hidden" name="form" value="Location">
<input type="submit" value="add it">
</p>
<p> </p>
<div id="div_2" class="page_name_auto_complete"> </div>
<p></p>
</form>

Since no form elements surround the first (organisation) field, the form this code resides in will be submitted.