Created attachment 14444 [details]
PDF file demonstrating the bug
This bug may be a regression in some of the recent knockout work.
I *think* that in previous versions of poppler, this file would be
rendered with the correct clipping but with incorrect opacity.
With the latest poppler the opacity is fixed, but a couple of the
corners of the diamond being drawn are being improperly clipped off.
Created attachment 14445 [details]
Created attachment 14446 [details]
Current, undesired output from poppler
Fixed with this commit: