A double major in STEM + humanities/social science can also lead to a five year program through no fault of either the institution or the student, too.

The problem becomes one of scheduling; frequently the upper division coursework in STEM come with 4:1 lab credit ratios, and a two hour lab is therefore more like an 8 hour per week commitment. Math may be a 4/week, most lecture sections are MWF in STEM, while LABS fill T/TH... and this isn't always compatible with the humanities schedule in the upper division courses, which may use a T/TH lecture with a Fri discussion/lab.

Schrödinger's cat walks into a bar. And doesn't.