Index: trunk/src/org/openstreetmap/josm/gui/tagging/presets/items/ComboMultiSelect.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/tagging/presets/items/ComboMultiSelect.java	(revision 16057)
+++ trunk/src/org/openstreetmap/josm/gui/tagging/presets/items/ComboMultiSelect.java	(revision 16058)
@@ -456,4 +456,5 @@
         if (valueArray == null) {
             valueArray = splitEscaped(delimiter, values);
+            values = null;
         }