Treeview header is misaligned compared to separators
Also there's an extra border on the first item.
The fix is to change left border -> right border here and for column view separators, but for some reason there's a missing pixel in that case:
Also there's an extra border on the first item.
The fix is to change left border -> right border here and for column view separators, but for some reason there's a missing pixel in that case: