Hi @zuyki5,
I hope you are well today and thanks for posting here.
It’s the known issue as reported on the following page.
https://github.com/puikinsh/Sparkling/issues/46
The issue will be fixed in the future version of theme but in the meanwhile you can fix it by using the Sparkling child theme attached to the following reply.
https://colorlib.com/wp/forums/topic/wrong-title-attribute-menu-with-font-awesome-icons/#post-27746
Best Regards,
Movin