<p>Geany 1.28 from git <a href="https://github.com/geany/geany/commit/24f91981c057a7e212c09da66fb974c3ccc85bd6" class="commit-link"><tt>24f9198</tt></a>, normal splitwindow plugin, neither <a href="https://github.com/b4n" class="user-mention">@b4n</a> or <a href="https://github.com/kugel-" class="user-mention">@kugel-</a> specials,  GTK 3.10.8, GLib 2.40.2</p>

<p>When selecting a different buffer for display on the second window using the dropdown list gets the following each time:</p>

<pre><code>(geany:9145): Gtk-CRITICAL **: gtk_widget_unmap: assertion 'GTK_IS_WIDGET (widget)' failed

(geany:9145): Gtk-CRITICAL **: gtk_widget_unmap: assertion 'GTK_IS_WIDGET (widget)' failed

(geany:9145): Gtk-CRITICAL **: gtk_widget_unrealize: assertion 'GTK_IS_WIDGET (widget)' failed

(geany:9145): Gtk-CRITICAL **: gtk_widget_unrealize: assertion 'GTK_IS_WIDGET (widget)' failed

</code></pre>

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