CircularProgress draws line over its content

[Robotino04]

Describe the bug
When a CircularProgress contains something, it does this:

I tested both label and button and it happens for both.

To Reproduce

<circularprogress
    value={0.5}
    startAt={0.0}
    endAt={1}
    rounded={true}
    heightRequest={50}
    widthRequest={50}
    css={"font-size: 5px; background-color: red;"}
>
    <label label={"test"} />
</circularprogress>;

Expected behavior
The line is not there.

Additional context