I'm fairly sure that this is caused by the exact bounds of a layer coincide
with the exact bounds of the selection: probably isPorbablyTotallyUnselected is
wrong here. Since that's Cyrille's baby, assign to him.

hein ? is it my baby ?

The probabilistic determination of whether a layer is totally selected or
unselected is, isn't it?

No, it's bart!

SVN commit 602692 by coppens:

Call the apropriate function instead (exactRect on a selection messes up with inverted selections like Select All).
BUG:135470

 M  +1 -1      kis_tool_fill.cc  


--- branches/koffice/1.6/koffice/krita/plugins/tools/defaulttools/kis_tool_fill.cc #602691:602692
@@ -81,7 +81,7 @@
     if (!device) return false;
 
     if (m_fillOnlySelection) {
-        QRect rc = device->selection()->exactBounds();
+        QRect rc = device->selection()->selectedRect();
         KisPaintDeviceSP filled = new KisPaintDevice(device->colorSpace(),  "filled");
         KisFillPainter painter(filled);
         if (m_usePattern)