Arrwos in Top Menu broken

Hi, since the wordpress update to 5.8.1 the arrows for the top menu didnt show.

Here is the link to my site
https://www.tc-ahrensburg.de

Cleared cache, tried diffrent browsers.
What can i do?

I have the same problem

My site: https://fermen-tiert.de

What can we do?

Hey there

Please see this thread with the solution: