Hi Clint,
The reported issue was our default behavior. Because we have given free spaces for remaining content of the container.
Also currently we don’t have support for last column occupies the remaining content of the container.
We have created a feature request for this. We will implement this feature by creating a property and if the property was enabled means the last column will occupies the remaining content of the container and not depend on the width value of the column.
We will let you know once the feature will be available.
Please let us know if you have any queries,
Regards,
Antony.