Video demonstration: https://youtu.be/MEqBdcLNGto There's nothing more than what the video shows. I insert an image and move it around and it leaves a trail. The trail disappears if you drag the image below or to the right of the markings or if you click on any other tool Build & Platform: krita 4.2.0-pre-alpha (git c16dbae) Xubuntu 17.10
I can't reproduce, although that looks like a redraw problem, more likely to be related to the graphic drivers/card/opengl? but I can be wrong. Git master here too, on Arch with nvidia system.
Note: this only happens on a QPainter canvas (i.e. with OpenGL disabled).
I am pretty sure this also happens with the decorations for the vector tools, and that we've got a report for it somewhere, but I cannot find it.
Can confirm joupent: Toggling 'Canvas Graphics Acceleration' in the Display settings toggles the trail bug as well.
Should be fixed with this patch: https://invent.kde.org/graphics/krita/-/merge_requests/488
Git commit 9d5fabf4fe357daec1ecec136317025acafc3ac1 by Dmitry Kazakov. Committed on 14/09/2020 at 19:50. Pushed by dkazakov into branch 'krita/4.3'. Fix partial updates in Reference Images tool M +3 -3 plugins/tools/defaulttool/defaulttool/DefaultTool.cpp M +1 -1 plugins/tools/defaulttool/defaulttool/DefaultTool.h M +2 -0 plugins/tools/defaulttool/referenceimagestool/ToolReferenceImages.cpp https://invent.kde.org/graphics/krita/commit/9d5fabf4fe357daec1ecec136317025acafc3ac1
Git commit e4b510ce4ed088bc177ae62edc497c9526ea3454 by Dmitry Kazakov. Committed on 14/09/2020 at 20:41. Pushed by dkazakov into branch 'master'. Fix partial updates in Reference Images tool M +3 -3 plugins/tools/defaulttool/defaulttool/DefaultTool.cpp M +1 -1 plugins/tools/defaulttool/defaulttool/DefaultTool.h M +2 -0 plugins/tools/defaulttool/referenceimagestool/ToolReferenceImages.cpp https://invent.kde.org/graphics/krita/commit/e4b510ce4ed088bc177ae62edc497c9526ea3454