Hello,
this is the normal behavior of the paginations.
If you are viewing the oldest portfolio, in you case that would be “DCEW” then the following (next one) is one that is a little younger and that would be “Build”.
In you are viewing the newest portfolio “GETAROUND” then you don’t have next one or the younger one, only the previous or the one that is older.
I hope you’ve figured out what I meant to say.