In Favorite songs I have some songs which have names in Cyrillic (Russian, Ukrainian). For example, the song is called Облака. If I type in Filter exactly Облака, I can find it, but when I type облака (the same but not starting with capital letter), I cannot find it. For songs with the name in Latin there's no such issue. And for Search there's not such issue (even with Cyrillic names) as well.