I'm a native Turkish speaker and I recently started noticing people around me pronounce "r" as "sh", sometimes [ʒ], when it's at the end of a word. So it's like,
Hayır -> Hayış
Duvar -> Duvaş
Kediler -> Kedileş
And they do the same thing when pronouncing words in other languages as well, like in English they'll pronounce "car" as /kɑʃ/, and obviously this isn't an issue among other native Turkish speakers.
Does this have some sort of name? I couldn't get anywhere by googling it.