All QML controls's background are transparent in embedded qt when using material style
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I am developing a QML application using qt 5.12, It works fine in the my computer.
While I build it from cross platform compiler and put it to my device , I found that the controls like button or combobox are show abnormal, their background are become traparent. After that I also found that this problem only happens while the qml style is set to Material.
Does anyone meet the same problem like that? Is this problem cause by some QT runtime libraries that may not include in my root file system or just a coding problem?!!
