Neovim version (nvim -v)

v0.8.0-1210-gd367ed9b2

Vim (not Nvim) behaves the same?

no

Operating system/version

Arch Linux

Terminal name/version

xfce4-terminal 1.0.4

$TERM environment variable

xterm-256color

Installation

Downloaded nvim-linux64.tar.gz

How to reproduce the issue

touch filename_with_unicode_ααα
nvim --clean
Type "filename_with_unicode_ααα"
Type "gf" with cursor on filename.

Expected behavior

filename_with_unicode_ααα is opened.

Actual behavior

E447: Can't find file "filename_with_unicode_" in path