patch 9.0.1610: display is wrong when 'smoothscroll' is set Commit: https://github.com/vim/vim/commit/d9a92dc70b20c76cef9ca186676583c92c14311c Author: zeertzjq <zeertzjq@outlook.com> Date: Mon Jun 5 18:41:35 2023 +0100 patch 9.0.1610: display is wrong when 'smoothscroll' is set Problem: Display is wrong when 'smoothscroll' is set and scrolling multiple lines. Solution: Redraw with UPD_NOT_VALID when "skipcol" is or was set. (closes #12490, closes #12468)