Neovim version (nvim -v)

v0.9.0-dev-506+g090048bec9f8

Vim (not Nvim) behaves the same?

no, vim 9.0.815

Operating system/version

Windows 11 22H2

Terminal name/version

Windows Terminal, Conhost

$TERM environment variable

nil, xterm-256color

Installation

Built from source

How to reproduce the issue

$ set TERM='xterm-256color' # without setting $TERM, ':h title' doesn't take effect in either cmd or powershell
$ echo foo | nvim --clean --cmd 'set title' -
:q

Expected behavior

The terminal title should be restored to what it was before opening neovim.

Actual behavior

The terminal title remains what it was set to by neovim.