I noted that in VX.2.5 when creating a new library the built-in borders symbol don't have the property type "border" set. Instead, they still appear as "annotate".
This means that all the built-in borders are unusable with Designer VX.2.5. (to use them, for each one you first need to manually change type in the symbol editor).
I think that the symbol type "border" type was only introduced in version VX2.3 (or something like that), so probably they forgot to update the type property the in built-in border symbols.
Hope this helps