I can confirm this exists but in one instance it's a crystal D4, and a D8. It seems to appear randomly because I get it in other prints of various other dice. They still manage to print, but fixing this would be huge for me. Thank you for your continued work
Thanks Kathryn! I've uploaded a new version (preview-3), I think this issue shouldn't occur anymore. The fix right now is quite hacky (I've explained it in a comment above), I'll try revisiting it in the future.