The clone function was borrowed (or stolenDon't you think a clone should refer to a new instance of an object? Therefore, not the same thing and if you change anything on the clone it would not be applied to the original (and vice versa)? There are split view functions (horizontal/vertical) which make more sense to have 2 views of the same document.

I'll change the behavior in v15.63, so if you clone a document "MyCode.js" it will create a new tab with the same content but named "MyCode (clone).js", or something similar...