Hello Michael,
Thank you for reporting this and providing the code snippet.
We are aware of the
RadComboBox issue with the
two scroll-bars when render mode is
lightweight and
drop down auto width is enabled. It is already logged in our system and we are considering its fix implementation.
Here you may find a public item related to this bug so you can vote and track its progress. As a temporary workaround you could use the following css:
Please let us know if it works for you.
Regards,
Aneliya Petkova
Telerik
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