Since the triangular part of the Vao wasn't showing up on my Likebook Mars, I rewrote that part to use polygons instead of paths. While it's showing up in Firefox, the main issue was with Chrome, and this appears to be a Chromium-wide problem, as it is not displaying on Chrome, Edge, or Vivaldi on my desktop even when I have it display the local file from my computer. So, maybe switching from path to polygon didn't fix anything.
Since the triangular part of the Vao wasn't showing up on my Likebook Mars, I rewrote that part to use polygons instead of paths. While it's showing up in Firefox, the main issue was with Chrome, and this appears to be a Chromium-wide problem, as it is not displaying on Chrome, Edge, or Vivaldi on my desktop even when I have it display the local file from my computer. So, maybe switching from path to polygon didn't fix anything.