admin environment built ins sorting
This may be happening with glossary items too but I haven't checked yet.
When a collection of builtins is linked to more than one course simultaneously, all builtins in the collection show up more than once in the builtins list. However, the list of builtins knows how many builtins are defined in total and only shows that many builtins. Therefore, many builtins become hidden depending on how the builtins are sorted. There is a filter in place which can be used to prevent this, but it would be nice to be able to look at a list of all builtins without this problem.