Rim artefacts occur after gaussian blur on layers with transparent areas
Environment/Versions
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Description of the bug
Reproduction
Is the bug reproducible? Random (Frequently but I haven't discerned a trigger yet)
Reproduction steps:
- Make several layers with some drawing. Up to now, it has only occurred when there were transparent areas, so make sure you have some.
- Try to blur some of them. It doesn't occur every time; I often have layer masks utilized, but in this last incident it happened on a layer with no layer mask which was above some layers with layer masks. Layering mode doesn't seem to affect this; in the last incident all layers were set to normal.
- Sometimes, a stark black or white rim occurs, not next to the drawing, but in some fashion randomly around the layer. Additionally, the rim isn't affected for example with colour shifts, but changes its appearance! And in the image tab above the workspace, it's displayed in the inverted colour.
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Expected result: a blurred layer without a rim
Additional information
If you have a backtrace for a crash or a warning, paste it here.