Qt stylesheet weird line on top of tab bar

Question

I style my QTabWidget and got a weird line on top of the tab bar. It only happens when it has multi tabs.

QTabWidget::pane {
    border-top: 1px solid #c4c4c4;
    top: -1px;
}

QTabWidget::tab-bar {
    left: 5px;
}

Any advice to fix this? Thanks.

Answer 1

You need to turn off the base in the QTabBar:

QTabBar {
    qproperty-drawBase: 0;
}