There are some YouTube channels that love to use Unicode bold or italic text in video titles.
The problem is that if I bookmark such a video, I wonโt be able to search for it later because โfirstโ and โ๐ณ๐ถ๐ฟ๐๐โ are entirely different.
Of course, you can change the title when saving the bookmark, but itโs a burden to do it manually, and some people may not even be aware of this nuisance.