Hi,
<div><br></div><div>sometimes I have a PluggableListMorph that displays a big red square (see attached screenshot). How can I debug why this happens ?</div><div><br></div><div><img src="cid:ii_13acc60ac35224b9" alt="Inline image 1"><br>

</div><div><br></div><div>Cheers,</div><div><br></div><div>Laurent</div>