_id not displayed as an option when creating a compound index in Compass

I was trying to create a compound index with 2 fields: “tasks” and “_id”. However, to my surprise, the _id is not listed as an option in the dropdown in the Create Index modal. This made me wonder: is using _id in a compound index discouraged by mongodb? is it an anti pattern? or is it just a bug in Compass?
Screenshot 2024-06-14 at 15.14.06

Hi Mateus! Thank you for your question!

The _id must be at the bottom of the dropdown. If you don’t see it, type _id in the input field. If that still doesn’t work, try updating Compass to the latest version or using the MongoDB Shell.

May I ask what is the query that you want to cover with this index?