Cannot List Items (only on this one specific rem)

The rem doesn’t turn into a list. I’ve tried the following methods (the ones that didn’t work):

  1. Refreshing page
  2. Using ⌘⌥L (I am using a mac version)
  3. Using Omni bar list command

I was able to fix this problem by copying the contents of the rem and pasting it on a separate newly created rem, but I thought it would still be helpful to post a bug that I experienced!