The card works on my phone. It doesn’t on my desktop, regardless of light or dark mode. If I go to edit, the card is there. It’s not affecting all cards in this deck. Just some, though I can’t differentiate a pattern. Here are some screenshots.
If there’s a difference between the note as you see it in the note editor, and the card as you see it on the study screen – you should look for that difference in the card templates.
You should also try the Troubleshooting checklist – Troubleshooting - Anki Manual .
Thank you! I’ll try that.