https://bugs.documentfoundation.org/show_bug.cgi?id=159515
--- Comment #13 from Patrick Luby <guibomac...@gmail.com> --- OK. The stack traces to my debug patch are nearly identical except that the cat photo in attachment #192332 goes through the GroupPrimitive2D class. That seems reasonable so maybe the inverted alpha channel happens at document load or change. Not sure where to look for that: frame #20: 0x0000000111a99a34 libdrawinglayerlo.dylib`drawinglayer::primitive2d::GroupPrimitive2D::getChildren(this=0x00006000057af480, rVisitor=0x0000600005f90f50) const at groupprimitive2d.hxx:76:90 frame #21: 0x0000000111ad5e60 libdrawinglayerlo.dylib`drawinglayer::primitive2d::GroupPrimitive2D::get2DDecomposition(this=0x00006000057af480, rVisitor=0x0000600005f90f50, (null)=0x0000600005f90f58) const at groupprimitive2d.cxx:53:13 frame #22: 0x0000000111b576c4 libdrawinglayerlo.dylib`drawinglayer::processor2d::BaseProcessor2D::process(this=0x0000600005f90f50, rCandidate=0x00006000057af480) at baseprocessor2d.cxx:46:24 -- You are receiving this mail because: You are the assignee for the bug.