Version: (using KDE 4.3.2) Installed from: Compiled From Sources Insert a big shape. If the shape is large enough the checkerboard background can be seen flickering while the shape is moved.
Probably the same issue when moving a layer. Try running without the pyramid & with tiles1 to see if the issue persists: if not, you can assign this bug to Dmitry.
looks like a duplicate of bug 214632
*** This bug has been marked as a duplicate of bug 176187 ***