I don’t know if anybody else has encountered this issue, but my gem store is hardly usable at the moment.
The tabs for currency exchange and the trading post are unaffected, but in the gem store tab there is a huge gap between the menu bar and the headline of the chosen gem store window and the actual content of said window, so what should be visible directly underneath the menu bar actually is roughly in the bottom 15% of the window and I can see only partial entries.
I found out that I can “scroll down” by mouse-dragging on some spots near the bottom of the window until the content is approximately where it is supposed to be, but at the same time the menu bar scrolls upwards out of the window, so if I want to browse the gem store I have to contantly find the secret “scroll spots” and keep scrolling up and down to change the gem store tab or view the content respectively.