Control has a shadow after it is clicked
before:

after:

Like this:

@160384921 can you add a project/code the reproduces the issue?
This looks very similar, if not identical, to https://github.com/MaterialDesignInXAML/MaterialDesignInXamlToolkit/issues/1097
Could you also try to set software rendering?
Hardware and drivers are not perfect
This looks very similar, if not identical, to #1097
Thanks and Yes,It's done.
I have followed this Link:
@Keboo I think no sample code needed anymore.
@160384921 yes, can you try to software rending that is mentioned in #1097 ?
Closing for now due to inactivity. If this is still a problem after testing with the software rendering please re-open.
Most helpful comment
This looks very similar, if not identical, to https://github.com/MaterialDesignInXAML/MaterialDesignInXamlToolkit/issues/1097