Hi,
I have the same problem.
And the solution above doesn’t work :(.
Code of my “edit thumb”:
<div class="ui-dialog ui-widget ui-widget-content ui-corner-all ui-front ui-draggable" tabindex="-1" role="dialog" aria-describedby="ui-id-1" aria-labelledby="ui-id-2" style="height: auto;width: 800px;top: 6511px;left: 543px;display: block;z-index: 101;"><div class="ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix ui-draggable-handle"><span id="ui-id-2" class="ui-dialog-title">Dostosuj miniaturę</span><button type="button" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-icon-only ui-dialog-titlebar-close" role="button" title="Close"><span class="ui-button-icon-primary ui-icon ui-icon-closethick"></span><span class="ui-button-text">Close</span></button></div><div class="ngg-overlay-dialog ui-dialog-content ui-widget-content" id="ui-id-1" style="width: 770px; min-height: 0px; max-height: none; height: 470px;"></div></div>
