Slider竖向放置时Knob使用图片，编译运行后Knob图片不能正常显示。查看生成的代码，图片总是被变成384x384的分辨率。Slider横向放置时不存在这个问题。
Hello @WilliamChin,
Thanks for your report, this issue has been verified and will be fixed in the future version.
Best Regards,
Wenbin
