Officially, you can only set column width as fractions, which leads to a lot of wasted horizontal space for something like the date column.
However, during testing I found that you can actually set fixed width for it such as width: 6.5rem
in the blueprint and it’ll work fine.
Not sure if it’s something that’ll guaranteed to work in the future, but for now it works fine.
Still I wish there’s an option to shrink the column to fit, as it’s a much easier and smarter way to utilize horizontal space.