Rg preview pane shows error in preview.sh in Windows 11 and Powershell

[mindentropy]

• [x] I have read through the manual page (man fzf)
• [x] I have the latest version of fzf
• [x] I have searched through the existing issues

Info

• OS
  • [ ] Linux
  • [ ] Mac OS X
  • [x] Windows
  • [ ] Etc.
• Shell
  • [ ] bash
  • [ ] zsh
  • [ ] fish
  • [x] PowerShell

Problem / Steps to reproduce

1. Open Rg in Gvim
2. Search for a word
3. Preview pane shows /bin/bash: line1: C:/Users/mindentropy/vimfiles/plugged/fzf.vim/bin/preview.sh

I check preview.sh and it has #!/usr/bin/env bash but I am not sure whether it is picking up bash. Is Rg supported on Windows 11?