Window does not open by <C-f> for filtering language. Opening only full screen numbered language list.

[nPaul]

Window does not open by for filtering language. Opening only full screen numbered language list

NVIM v0.9.1 compiled from source.

[williamboman]

Mason uses vim.ui.select to prompt for a selection. The default one is what you described, the screenshot in the README uses https://github.com/stevearc/dressing.nvim.