Hi Chris,
Thank you for writing.
Despite my efforts, I did not find any issues related to the bound mode of RadMultiColumnComboBox.
Please open a new ticket and send us a sample project that demonstrates the described behavior with some part of your data and formatting settings applied to MultiColumnComboBox. This will allow us to investigate the issue locally.
Thank you for your cooperation.
Best wishes,
Julian Benkov
the Telerik team
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