Thank you for writing.
I have tested this case under Windows 7 and the scaling looks right. But please note that the different operating systems are using different scaling methods. This is why I want to kindly ask you to specify the exact operating system that you are using along with the exact version of our controls. This will allow us to further investigate this case.
Also in order your application to look good in different scaling modes you should make it DPI aware. But this cannot be done by just setting the AutoScaleMode to DPI. To create a DPI aware application you should first create an additional manifest file and then handle the scaling manually. I have attached a sample application along with explanation of how the scaling works.
I hope this information helps. Should you have any other questions, I will be glad to assist you.
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