Visual bug in QScrollbar

[insideee]

Im having this visual bug on Windows 10 but on linux the transparency works fine.

Stylesheet im using:

self._results_scroll.setStyleSheet("""QScrollBar:vertical {
                                            background-color: rgba(0, 0, 0, 0);
                                            width:8px;    
                                            margin: 0px 0px 0px 0px;
                                            }
                                            QScrollBar::handle:vertical {
                                            background: #161C26;
                                            border-radius: 4px;
                                            min-height: 0px;
                                            }
                                            QScrollBar::add-line:vertical {
                                            background: none;
                                            height: 0px;
                                            subcontrol-position: bottom;
                                            subcontrol-origin: margin;
                                            }
                                            QScrollBar::sub-line:vertical {
                                            background: none;
                                            height: 0 px;
                                            subcontrol-position: top;
                                            subcontrol-origin: margin;
                                            }""")

Has anyone gone through something similar or had any thoughts on it?

[insideee]

Solved by adding:

QScrollBar::up-arrow:vertical, QScrollBar::down-arrow:vertical, 
QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
border: none;
background: none;
color: none;
}

Full working code:

QScrollBar:vertical {
background-color: rgba(0, 0, 0, 0);
width:8px; 
}
QScrollBar::handle:vertical {
background: #161C26;
border-radius: 4px;
min-height: 20px;
}
QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
border: none;
background: none;
}
QScrollBar::up-arrow:vertical, QScrollBar::down-arrow:vertical, 
QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
border: none;
background: none;
color: none;
}                     

source: obs github