Sorry to hear that the suggested approaches do not work on your side.
About the axes, as any other UI element the WPF framework is taking care of its rendering. So you can't easily force it to be rendered. You can use the Measure(), Arrange() and UpdateLayout() to force measuring the axis, and in this case, the method could work. But, there are too many elements that depends on the axis' proper layout, so I can't guarantee that this will work properly, or if it will work at all.
If you decide, you can isolate the issue in a new project (or use your original one if not too big) and open a new support ticket from your telerik.com account. This way you can attach it and ask for help there.
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