In the /loot replace command, the optional <count> argument isn't shown because of suggestions, until you move your cursor back. No suggestions are otherwise provided for the count argument as it is a numerical argument that are not coordinates or rotation.

Current behavior:
See screenshots; the cursor needs to be moved back in order to see you can even provide a count

Expected behavior:
The option to provide the count value is shown when at the argument (eg by showing [<count>] in front of the fish, loot, kill and mine suggestions).

Affected commands and their arguments:

• /effect
  • (infinite|<seconds>)
• /loot
  • (fish|loot|kill|mine|<count>)