patch 8.2.3394: filler lines are wrong when changing text in diff mode Commit: https://github.com/vim/vim/commit/04626c243c47af91c2580eaf23e12286180e0e81 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 1 16:02:07 2021 +0200 patch 8.2.3394: filler lines are wrong when changing text in diff mode Problem: Filler lines are wrong when changing text in diff mode. Solution: Don't change the filler lines on every change. Check scrollbinding when updating the filler lines. (closes #8809)