<p>I thought I had opened an issue about this already but I can't find it. The ProjectOrganizer plugin keeps adding tabs to the Project preferences dialog each time it's shown and not removing them when it's closed.</p>

<p><a href="https://cloud.githubusercontent.com/assets/181177/15993367/777613ee-3098-11e6-9850-3fb3c62de79b.png" target="_blank"><img src="https://cloud.githubusercontent.com/assets/181177/15993367/777613ee-3098-11e6-9850-3fb3c62de79b.png" alt="geany_po_proj_dialog" style="max-width:100%;"></a></p>

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