Clone tool seems to repeat the border in order to keep cloning. This causes the border to repeat the canvas border color. As lon gas there is no pattern available the clone results are good. But as exaggerated on the attached video results can be very nasty. Reproducible: Always Expected Results: Clone real available pixel data, if there is no data layer edge should be cloned.
Created attachment 87298 [details] Clone tool behavior on edges.
Git commit c2e05bb0f6aa5883f20bf9c7450f3dcbdd798690 by Dmitry Kazakov. Committed on 20/06/2014 at 07:26. Pushed by dkazakov into branch 'master'. Remove explicit limiting of the device in the Duplicate Op This limit is dated in 2008. I don't know why it was introduced. M +0 -8 krita/plugins/paintops/defaultpaintops/duplicate/kis_duplicateop.cpp http://commits.kde.org/calligra/c2e05bb0f6aa5883f20bf9c7450f3dcbdd798690