Currently experiencing an issue on this website: specifically in Safari. When I click on "KUNDEN" in the navigation for the first time, the entire header disappears. I checked the dev console and noticed that the header content is loaded, even in the source code. However, the content does not appear until I reload the page or select all (CTRL+A).
Any thoughts on why this might be happening? Could it potentially be a Typo3 bug? See the screenshot below for reference:
This problem occurs in Safari 6.0.5 on Mac 10.8.4.