Hey Hans,
Thank you for your answers.
I have tried to reproduce the issue on my end and I was not able to.
For that reason I went ahead and got a sanity check from one of our senior support analysts.
From what he is seeing, it looks like even with twenty-fourteen there is some template customization at play.
Either in your theme’s functions.php or in your theme’s /tribe-events/ folder that uses some form of redirection or URL rewrite to be able to get pretty permalinks such as /veranstaltungen/kategorie/terminanzeige/heute/ , as this is not a built-in function.
If you don’t mind, could you send us a copy of your WordPress theme in a .zip file so that we can investigate ?
I can’t promise you anything, but we will certainly take a look.
Best regards,
Geoff B.