Centre-aligned Chinese texts are misplaced, and tb-rl vertical Chinese text is completely clustered into one blob. The former problem is not seen with Latin script texts. SVG files generated using AI or Inkscape have this issue.
Problematic Chinese veresion:
English version, no problem (note the vertical text is rotated, not tb-rl):
Partly addressed by https://bugzilla.gnome.org/show_bug.cgi?id=664533