Ticket #19026: 19026.7.patch

src/org/openstreetmap/josm/data/imagery/ImageryInfo.java

@@ -788 +788 @@
      * @see SourceInfo#getSourceType
      */
     public ImageryType getImageryType() {
-        return super.getSourceType();
+        return super.getSourceType() == null ? ImageryType.WMS.getDefault() : super.getSourceType();
     }
 
     /**