The font used for inline code does not distinguish clearly between similar characters such as 0 o O i I l L. I've attached 3 images.
  1. worst - ClickUp inline code (grey background with red text).
  2. ok - ClickUp code block (grey background, black text). At least capital I is distinguishable from lower case l. But zero and O look too similar.
  3. best - Slack inline code snippet (black background, orange text). All of the characters are clearly distinguishable.