QToolTip style for opacity and color not working on Windows 11

[Rory_1]

I am able to set the color and opacity for tooltips in Qt 6.5.2 MacOS, but not on Qt 6.5.2 on a PC running Win11. Here is a minimum reproducible gaudy sample.

test.pro

QT += core gui widgets
SOURCES += main.cpp
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

main.cpp

#include <QApplication>
#include <QMainWindow>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QMainWindow mw;
    QString s =
        "QToolTip {"
        "opacity: 100;"             // does not work on windows
        "color: yellow;"            // does not work on windows
        "background-color: red;"
        "border-width: 2px;"
        "border-style: solid;"
        "border-color: magenta;"
        "margin: 2px;"
        "font-size: 20pt;"
        "}";
    mw.setStyleSheet(s);
    mw.setToolTip("Testing");
    mw.show();
    return a.exec();
}

Any tips (haha) to solve this much appreciated!

[esmolikowski]

@Rory_1 I am running into the same issue and wrote a bug report FYI:
https://bugreports.qt.io/browse/QTBUG-116021

I'll let you know if I find a workaround.

[Rory_1]

@esmolikowski Thanks!