patch 9.0.0178: cursor position wrong with virtual text before Tab Commit: https://github.com/vim/vim/commit/e428fa04a758cc87ea580c856a796e58e407504b Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 9 16:55:41 2022 +0100 patch 9.0.0178: cursor position wrong with virtual text before Tab Problem: Cursor position wrong with virtual text before Tab. Solution: Use the byte length, not the cell with, to compare the column. Correct tab size after text prop. (closes #10866)

>s+0&#ffffff0|o|m|e| |t|e|x|t| |t+0&#5fd7ff255|o| |w|o|r|k| +0&#ffffff0|w|i|t|h| @52
|5|1| @14|╔+0#0000001#ffd7ff255|═@9|╗| +0#0000000#ffffff0@45
|5|2| @14|║+0#0000001#ffd7ff255| |t|h|e| |t|e|x|t| |║| +0#0000000#ffffff0@45
|5|3| @14|╚+0#0000001#ffd7ff255|═@9|╝| +0#0000000#ffffff0@45
|5|4| @72
|5@1| @72
|5|6| @72
|5|7| @72
|5|8| @72
@57|5|0|,|1| @9|5|3|%|