Sage 300 window re-sizes badly after updating to 6.0.1.1.0.04
Overview
Even after updating to version 6.0.1.1.0.04 of the Sage 300 integration, the AvaTax windows continue to re-size with large blank sections that cannot be removed.
Environment
Sage 300
Resolution
Updating to a newer version of Sage 300 (6.1 or higher) will make it so AvaTax is instead using the native Sage 300 windows. This will resolve the issue.