Studio components missing their specifics in Property editor

In qt6.2 build, such Studio components as Rectangle, Arc, Border and others are missing part of their properties in PropEditor.
Central part with color, stroke and all other item specific properties is missing.
Only the following blocks are shown: Component, Geometry, Visibility, Advanced, Layer, Layout and Alignment.
Regular Rectangle, Text and other native QtQuick components seems to be ok.

Win10, build 48 (qt6.2). Build 41 (June 28, qt5.15 based) is absolutely fine.