Browser Tab: Page Title

Could somebody please have a look at this image:

The problem:
The title tag of this page is „Q-Stables • QS-News 2018“
Chrome shows it correctly, Safari doesn’t and shows „Without Title“ (= Ohne Titel). Additionally, the favicon isn’t displayed.
What is really irritating: All other pages I visit with Safari are showing the correct favicon and title as tab label.
One more information: The test site, which I published via Webflow, shows up correctly in Safari, the „final“, exported site doesn‘t.

What could be wrong here? Is there eventually a glitch in Webflow’s HTML export code?

If someone wants to check this on the life site: https://q-stables.de/qs-news-2018.html

Thank you for having a look!

Probably a caching issue with your third-party server, or the server’s cache expiry time is too long.

Try clearing local browser (safari) cache?

Thank you @samliew, for your assistance.
I restarted my machine, cleared the browser cache on my machine, and contacted my provider to clear the server-side cache – the issue persists.
After downloading the HTML data from Webflow again and feeding my domain with these new data, all is working correctly again!
No real idea, what happened!
But anyway: Thank you for your help!