I am developing a small Demo-App with qt 5.9.7 under centos7, my problem is that setting QQuickStyle to "Material" leads to unexpected output, for example

• It shows only some gray background for the backrground of selected ListView (not different greys for mouse hovering and selection),
• the background of a ToolBar and Buttons is the same as the application background, instead of blue or a darker grey.
• Mouse hovering effects are all shown in the upper left corner of the application window and have a wrong shape.

The style "Material" is listed in QQuickStyle::availableStyles(); Universal and default-styles seem to work normally (but are not so pretty) - I want to canvass customers with that demo.

On my Ubunutu-machine with the same Qt-Version, I got the right behaviour. What can I try - does anybody has some suggestions? Any help appreciated....

Best