There is one other thing that might be related. When you select attributes the colum headers can be adjusted in width. That can be done by dragging the vertical seperation line between columns. That can be handy when there are many id's for example. When there are many they all start with the same code.
It is very difficult to select the vertical dragging line there. It's a very thin line and I find it difficult to drag the column wider. I think it's only a one pixel wide line. Both on a desktop and a laptop.