[windows] calling fzf#vim#with_preview before fzf#vim#gitfiles causes backspace and mouse scroll stop working

[DanSM-5]

Checklist

• [X] I have fzf 0.54.0 or later
• [X] I have searched through the existing issues

Output of :echo system(fzf#exec() .. ' --version')

0.55.0 (fc69308)

OS

• [ ] Linux
• [ ] macOS
• [X] Windows
• [ ] Etc.

Problem / Steps to reproduce

Issue

Calling fzf#vim#with_preview in vim before calling fzf#vim#gitfiles('?', ...) (git status) from git bash shell causes mouse scroll to stop working (it always moves to the center) and backspace stops working (do not delete text) and in some cases it starts inserting spaces.

The most problematic part is that it doesn't seem to be a way to exit that state.

I tried to record the issue. Notice the keys being presses on the bottom left corner.

https://github.com/user-attachments/assets/657b8749-db5d-4dac-be87-367e8ea4fc7f

Curiously though, if you call fzf#vim#gitfiles('?', ...) first, an error will appear on screen but the function will succeed. After that it doesn't matter if you use fzf#vim#with_preview, it won't enter on the weird state.

https://github.com/user-attachments/assets/cf50e35f-55b8-4fe8-8d00-b3d6b5ce6dbd

Remarks

• Issue happens on vim that shows has('win32') == 1. I did not tried with the vim version that comes with with git bash has('win32unix') == 1.
• Issue does not happen on neovim.
• Issue does not happen when vim is started from powershell. However if you call fzf#vim#gitfiles first, you can see the same error showed in the second video.
• Issue is exclusive to fzf#vim#gitfiles('?', {}) for git status e.g. :GFiles?. The other use of it :GFiles does not cause the issue.
• Output of fzf#vim#with_preview({ 'options': [] }, 0) differs significantly between vim and neovim which may be relevant.

" neovim
:echo fzf#vim#with_preview({ 'options': [] }, 0)
" {'options': ['--preview', 'C:\PROGRA~1\Git\usr\bin\bash.exe C:/Users/daniel/AppData/Local/nvim-data/plugged/fzf.vim/bin/preview.sh {}', '--bind', '0:toggle-preview']}

" vim
:echo fzf#vim#with_preview({ 'options': [] }, 0)
" { 'options': [] }

Additional information

• vim 9.1 (installed with scoop)
• windows 11 build 22631 (tested in 2 pcs with same build number)