Hi,

There seems to be a rogue submit button showing at the bottom of different admin pages for different plugins. For example:

Nested Pages = Bottom of the All Pages view
PublishPress = General settings page.

Part of the related HTML is:

<form action="" method="post" id="acp-export">
			<input type="hidden" id="_wpnonce" name="_wpnonce" value="3ff00135eb">			<input type="submit" class="button button-secondary">
		</form>

When we deactivate Admin Columns Pro, the button goes away. It looks like it may be related to the Export feature.