So i came over this post where i finally found the working solution for me. I think everyone should know this little trick as it can save costs and lots of time. The classic, well-known Apple issues - year after year ...

https://blog.cotten.io/desktop-safari-still-hates-instanceof-touchevent-1fcdda8409d5

The trick is to use: const isTouch = ("touches" in e); instead of const isTouch = e instanceof e;

Which is strange but i think we have to deal with it :D