Bug or Feature? System administrators can’t see all forms

For a little while now I’ve been wondering if it’s a bug or if it’s a feature that, at least in the more recent versions of Dynamics, System Administrators won’t be able to choose those entity forms that were not assigned to the “System Administrator” security role?

It seems it was different in 2011, and, maybe, in 2013.. But it’s been a while.

Here is an example. There are 3 main forms in the account entity:

That MoCa form is assigned to the “Field Service – Resource” security role only:

So, even while logged in as a System Administrator, I cannot choose that form:

But, if I add System Administrator role to the form:

I can, now, choose that form when looking at the account record:

This is a bit of a unique situation for System Admins, since, I think, we have access to almost everything else in Dynamics by default (well, another example of where sys admins powers are limited would be personal views/dashboards.. but that makes sense since I probably would not want to see everybody else’s personal views anyway).