I can recreate the same behavior. I think this will definitely be a mistake, as it implies that the value will be set correctly by the designer.
As a workaround, you can put the name in the Tag property. (Or install it programmatically in the constructor, but this will not work if you need to add a column to the constructor later. Then I would rather not use the constructor at all to initialize the columns.)
I found some discussion of this here - it looks like this is a known issue, they also come with the hack tag.
steinar
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