Index: src/Widgets/Filmstrip.cs
===================================================================
--- src/Widgets/Filmstrip.cs	(revisione 4485)
+++ src/Widgets/Filmstrip.cs	(copia locale)
@@ -372,6 +372,9 @@
 			if (evnt.Window != GdkWindow)
 				return true;
 
+			if (selection.Collection.Count == 0)
+				return true;
+
 			if (extendable && Allocation.Width >= BackgroundPixbuf.Width + (2 * x_offset) + BackgroundTile.Width)
 				BackgroundPixbuf = null;