This is a regression caused by 8ddffa4 which is the fix for #9252:

Repro steps:

1. Hover over get on the last line of the code below:

from typing_extensions import TypedDict

class Cls(TypedDict):
    a: int
    b: str

dct: Cls = {"a": 1, "b": "2"}
dct.get("a")

Actual:

Nothing. No popup. Hovering over other tokens still works as expected.

Expected:

This is what I see with 1.1.345 and with 7c7703a which is the commit right before 8ddffa4.