misrendering of certain pdf bar plots
Originally reported at https://github.com/matplotlib/matplotlib/issues/12864: at certain zoom levels, evince renders the attached pdf with "inverted" bars (screenshots in the linked issue).
Per https://gitlab.gnome.org/GNOME/evince/issues/1056#note_401801, this appears to be a bug on poppler's side, reproducible with
$ pdftocairo -png -scale-to 2600 test.pdf