Why can we no longer name the Record ID field?

When I first started using Tulip a few months ago, I was able to edit the field name of the Record ID field, but now all of a sudden, our app developers cannot edit the field name. I attached some photos for reference and would appreciate any knowledge on the subject!

Now:

What Version of TULIP are you running?

Our version used to have all of those options, but suddenly they disappeared.