Incorrect rendering of type 7 shading
Submitted by Andrea Canciani
Assigned to poppler-bugs
Created attachment 41581 Testcase
When a type 7 shading folds over itself, poppler lets an incorrect solution be the topmost one.
The ISO3200 specifies that when a point has multiple solutions in the (u,v) parameters, the one with the highest v value is on top and in case of multiple points with the same v value, the one with highest u.
Attachment 41581, "Testcase":