Argument of type "X" cannot be assigned to parameter of type "X" despite cast

[bersbersbers]

Describe the bug
I would expect that after array = cast("FloatArray", array), I should always be able to call foo(array) with def foo(array: FloatArray). However, pyright does not like it:

bug.py:20:9 - error: Argument of type "FloatArray" cannot be assigned to parameter "array" of type "FloatArray" in function "foo"
"ndarray[Any, dtype[floating[Any] | integer[Any]]]" is not assignable to "ndarray[Any, dtype[floating[Any]]]"
Type parameter "_DType_co@ndarray" is covariant, but "dtype[floating[Any] | integer[Any]]" is not a subtype of "dtype[floating[Any]]"
"dtype[floating[Any] | integer[Any]]" is not assignable to "dtype[floating[Any]]"
Type parameter "_DTypeScalar_co@dtype" is covariant, but "floating[Any] | integer[Any]" is not a subtype of "floating[Any]"
Type "floating[Any] | integer[Any]" is not assignable to type "floating[Any]" (reportArgumentType)
1 error, 0 warnings, 0 informations

Code or Screenshots

from typing import Any, cast

import numpy as np
import numpy.typing as npt

type FloatArray = npt.NDArray[np.floating[Any]]
type NumberArray = npt.NDArray[np.floating[Any] | np.integer[Any]]


def foo(array: FloatArray) -> None: ...


def bar(array: NumberArray) -> None:
    # this works:
    array2 = cast("FloatArray", array)
    foo(array2)

    # this seems to confuse pyright
    array = cast("FloatArray", array)
    foo(array)

VS Code extension or command-line
pyright 1.1.394 from PyPI