QSpinBox::down-arrow shows up as a line when styled with QSS

[Pro Grammer]

I'm trying to style a QSpinBox with QSS and when I apply any style to the buttons, the arrows disappear, and reappear just as a horizontal line when I style them specifically. Here is a screenshot of the result: https://i.imgur.com/YinYwb6.png

Is there a way to keep the arrow like in the non-styled button on top?

QSpinBox {
background-color: white;
border: 1px solid rgba(160, 165, 182, 1);
padding: 3px;
}

QSpinBox::down-button {
background-color: rgba(211, 211, 253, 1);
border: 1px solid rgba(160, 165, 182, 1);
padding: 3px;
}

QSpinBox::down-arrow {
background: red;
}

[SGaist]

Hi,

IIRC, these are note lines but a + and a -. AFAIK, you have to provide the arrows yourself like shown in the example