Version: (using KDE Devel) Installed from: Compiled sources this seems to apply in particular to windows aligned to the right and bottom desktop edge, but i'm not sure. the result are outright insanely small windows, in one or both directions. i think windows should not be resized at all unless they are bigger than the new desktop, and then they should occupy the whole desktop.
*** This bug has been marked as a duplicate of 80545 ***