New sticky header is obstructing site functionality on mobile

While previewing armor slots on the armory, the sticky logo header appears and covers the X that allows you to close out the gear preview to return to the full character view. The only way to fix this is to reload the page. In Safari, the issue only appears once using the arrows to scroll through the armor slots for the first time. On Chrome, the issue appears immediately upon first preview.

While posting on mobile forums, it also covers up everything above the composition window, so you can no longer navigate elsewhere while composing a thread. The sticky logo doesn’t even go to the forum main page, but rather the main WoW site.

I’m on iPhone 8, but it’s the same resolution as the current SE.

Examples:
Clicking into first armor preview on Safari:


Using the arrow to scroll obscures X on Safari (this occurs right away on Chrome preview):


Posting on the forums (post has since been edited after further testing):