error with tmux on cygwin: "open terminal failed: not a terminal"

[brl0]

Environment

Windows build number: [Version 10.0.19013.1102]
Windows Terminal version (if applicable):
0.10.781.0

Any other software?
Cygwin 2.901
tmux 2.6

Windows Terminal profile:

            {
                "name": "Cygwin",
                "commandline": "C:/Users/b_r_l/scoop/persist/cygwin/root/bin/bash.exe --login -i",
                "icon": "%USERPROFILE%/scoop/apps/cygwin/current/root/Cygwin-Terminal.ico"
            },

Steps to reproduce

Run tmux

Expected behavior

tmux starts

Actual behavior

Error:
open terminal failed: not a terminal

[DHowett-MSFT]

This is an upstream bug, more info here: #5132 (comment)

/dup #5132

[ghost]

Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!