Steps to reproduce

• Create a general project
• Add some Qt Quick Controls, e.g Check box, Radio button, Slider, to 2D View
• When Basic style is selected, style looks correct
• Select different styles from the combobox in the bottom bar
• -> Fusion, Imagine, Material Light, Material Dark, Universal Light, Universal Dark, Universal System, Windows styles do not look correct in 2D View (comparing to how the controls styles look in 4.7.2 snapshot and https://doc.qt.io/qt-6/qtquickcontrols-styles.html#available-styles )
• See attached picture comparing Imagine style on 4.7.2 and 4.8
• When running the project/running live preview, styles are dispayed correctly