Hah, you stumbled upon one of Lemmy’s weird UI quirks. If you start a line with a number and period, it assumes you’re making a numbered list. But that period is placed at a specific indent, so long numbers spill off the left side of the screen.

1. Here’s what it is supposed to look like.

(Adding a line break here)

12345678. And here is what happens when the number is too long.

It only works with 8 numbers or less though, because 99999999 is the highest value that the numbered list supports.