This seems to be caused by the second QQmlEngine instance used in creating the UbuntuColors and palette object for the Theme context property. Transforming Theme and UbuntuColors into a proper singleton type seems to solve the race.
This seems to be caused by the second QQmlEngine instance used in creating the UbuntuColors and palette object for the Theme context property. Transforming Theme and UbuntuColors into a proper singleton type seems to solve the race.