I've got a strange issue. I have a grid without any HeaderStyle-Width.
If I set AllowColumnResize = false, every column of the grid is set to best size (button columns are narrow, columns with lots of text are wide). But obviously, I can't resize the columns.
If I set AllowColumnResize = true, every column get the same width. Button columns get far too wide, columns with a lot of text too narrow.
I'm using v 2016.3.914.45, I don't think it was a problem with the previous version.