Summary

With this code:
https://play.ty.dev/fdd1d134-c407-4bee-bbc6-55418b97988e

a: "str"
b: "str | int"

Hovering the str in a gives a title saying str:

While hovering the str in b is missing that title:

This happens both in the playground and in VSC.

Version

ty 0.0.1-alpha.28 (8c34249 2025-11-25) playground (536425619)