Board Thread:Support Requests - Getting Technical/@comment-38160672-20200616164651/@comment-34918040-20200619023452

I don't think it would work with rowspan.

BUT: I think it's very aesthetic if all sort buttons are well aligned. *cough* So you could hide the bottom border of a (now empty) first row cell and the top border of a second row cell:

gives

It's not a real rowspan but it looks like one, with the content aligned at the bottom.

Another possibility is to move the text of the second row cell to the first row cell. The sort buttons will stay below in the empty second row cell:

gives