Comment 5 for bug 1620991

=== modified file 'src/imports/Components/1.3/ComboButton.qml'
--- src/imports/Components/1.3/ComboButton.qml 2016-09-13 15:01:14 +0000
+++ src/imports/Components/1.3/ComboButton.qml 2016-09-13 15:57:46 +0000
@@ -395,6 +395,7 @@
         }
     }
     Scrollbar {
+ parent: comboHolder.parent
         flickableItem: comboHolder
     }

This appears to work. However no test seems to catch this problem - we need to find a way to test that this is actually fixed.