diff -r 3ac8bf5c5014 -r 7c5dd702d6d3 uiacceltk/hitchcock/coretoolkit/src/HuiRosterImpl.cpp
--- a/uiacceltk/hitchcock/coretoolkit/src/HuiRosterImpl.cpp	Tue Apr 27 17:34:42 2010 +0300
+++ b/uiacceltk/hitchcock/coretoolkit/src/HuiRosterImpl.cpp	Tue May 11 17:03:00 2010 +0300
@@ -542,7 +542,10 @@
         DrawSelfFrozen(aGc, display);
         return;
         }
-
+    
+    // this was moved here because otherwise background clear did never end up to effect canvas buffers
+    display->DoBackgroundClear();
+    
     TInt visualCount = 0;
     TInt entryCount = iEntries.Count();
     // Draw the visuals tree in the display.