The same buffer in different windows loses position

[expipiplus1]

If I have the same file in two windows and I save in one window the other window loses its position.

To reproduce

• vim Foo.hs
• :split
• :w
• Observe that the non-active split has had its position changed to the bottom of the file

Here's it in action: https://asciinema.org/a/7ui2mgim7pmqinjb7fzqbvqdn

[expipiplus1]

It's possible that this, #4 and #7 could be fixed by generating a patch and applying that, instead of replacing the buffer.

[expipiplus1]

According to @krux02 here https://github.com/rhysd/vim-clang-format/issues/24 autoread could be a solution.

[expipiplus1]

This looks like a relevant patch for gofmt https://github.com/fatih/vim-go/commit/99a1732e40e3f064300d544eebd4153dbc3c60c7