I think the problem is the encoding of the URI. I think that the browser reads the term name as %D7%9E%D7%95%D7%A9%D7%92-%D7%9C%D7%93%D7%95%D7%92%D7%9E%D7%94 and not מושג-לדוגמה. That's why it thinks the term name is called %D7%9E%D7%95%D7%A9%D7%92-%D7%9C%D7%93%D7%95%D7%92%D7%9E%D7%94.
The solution I recommend is to enforce decoding of the URI to get the real term name.
When sending a term page across social media, SEO isn't recognized in the embed message.
I think the problem is the encoding of the URI. I think that the browser reads the term name as
%D7%9E%D7%95%D7%A9%D7%92-%D7%9C%D7%93%D7%95%D7%92%D7%9E%D7%94and notמושג-לדוגמה. That's why it thinks the term name is called%D7%9E%D7%95%D7%A9%D7%92-%D7%9C%D7%93%D7%95%D7%92%D7%9E%D7%94.The solution I recommend is to enforce decoding of the URI to get the real term name.