Editor repeat lines.
Last thing what I did was I was searching word (not sure is that causing the problem) Please see screen capture, middle is the editor and right is same file opened with vim.
uname: Linux Cauldron 5.7.8-200.fc32.x86_64 #1 SMP Thu Jul 9 14:34:51 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux Fedora 32 (x86-64) Cinnamon 4.6.5
