If the cursor is placed on one of the zwnj chars either side of a card, all typical character input is blocked. However, on macOS you can use Alt+e and other shortcuts to enter an accent combination which is not blocked and results in the zwnj being replaced and characters shown in the editor that aren't removable without deleting the card.
If the cursor is placed on one of the
zwnjchars either side of a card, all typical character input is blocked. However, on macOS you can use Alt+e and other shortcuts to enter an accent combination which is not blocked and results in thezwnjbeing replaced and characters shown in the editor that aren't removable without deleting the card.