The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+04AF forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
El Wikipedia tiene la siguiente información acerca de este punto de código:
Ү, ү (cursiva: Ү, ү, llamada U recta o ue) es una letra de las versiones del alfabeto cirílico adaptadas a los idiomas no eslavos. No debe confundirse con la letra Y del alfabeto latino.[1]