This happens when your application does not indicate comtl32 v6 in the application manifest.
Typically, the manifest settings will be ordered in the settings. Look at the app. You should see that the manifest file is set to "Auto Generate" and the checkmark "Enable Runtime Element". This is an IDE project parameter that gives you comctl32 v6.
There are other ways to specify comctl32 v6 in your manifest. For example, you can provide a custom manifest. If so, then you will need to understand what is happening with your manifest.
David heffernan
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