Turns out it's not only weapons. The material thumbnails will not load unless highlighted when at the Mag. This happens on Xbox and PC as well.
Converse with fellow players
Glad you were able to exchange some and that it get's ironed out!
https://ngs.pso2.com/news/announcements/maintenanceover0608 They are the same client so base PSO2 will be down as well.