umlauts

Hello everyone, I have now upgraded from XenForo 2.2 to 2.3 (currently to 2.3.3). Since there were major changes, I carried out an intensive check for errors (especially in my adapted design) after the upgrade. I noticed that despite activating "Use fully friendly URLs" my umlauts in the URLs...

Hello! I switched from apache to nginx. Good. I have the forum in the root and a /wiki. If I want to go to a wiki page with a üö or ä the ü get to a ü and so far so that I can't join the page. If I delete the cookies it works. But with apache it worked every time. Why XenForo Cookies do that...