QMediaDevices::videoInputs returns empty in Qt >6.8.3 even with video inputs connected

Attempting to call QMediaDevices::videoInputs to get the currently connected video inputs returns an empty list of QCameraDevices, even when video inputs are connected and registered as "Camera" devices.

I have a project that I started building in Qt 6.8.0. Everything was working fine in that version, but after updating to Qt 6.8.3, I noticed that QMediaDevices::videoInputs suffered the bug described above. I attempted to go further and upgraded to Qt 6.9.0, but was met with the same issue.

The code that I first noticed failing (just populating a QListWidget with video device names):

void AddCameraDialog::populateDropdown()
{
    for (QCameraDevice device : QMediaDevices::videoInputs()) {
        ui.dropdownDevices->addItem(device.description(), device.id());
    }
}

STEPS TO RECREATE

1. Set your IDE to target Qt 6.8.3 or higher (e.g. 6.9.0)
2. Build project that utilizes QMediaDevices::videoInputs
3. Run project and observe the output of QMediaDevices::videoInputs

ATTEMPTS AT FIXES/WORKAROUNDS

• Building on a separate device (using Qt 6.8.0, Qt 6.8.3, and Qt 6.9.0)
• Updating all available updates using the Qt Maintenance Tool
• Reinstalling Qt versions
• Updating IDE (Visual Studio)

OTHER OBSERVATIONS

• QMediaDevices::audioInputs and QMediaDevices::audioOutputs appear to work and correctly return populated lists
• QMediaDevices::defaultVideoInput also returns as null