Unexpected Ctrl-D keystroke on Alt+Left #4448

New Issue

claunia · 2026-01-30T23:48:00Z

claunia commented

2026-01-30 23:48:00 +00:00

Originally created by @davy-tw on GitHub (Oct 14, 2019).

Environment

Windows build number: 10.0.18363.418
Windows Terminal version (if applicable): 0.5.2762.0

Steps to reproduce

In WSL session, press Alt+Left and release Left key then Alt key.

Expected behavior

This should not input Ctrl+D

Actual behavior

The terminal will execute Alt+Left keystroke and unexpected Ctrl+D keystroke (when releasing Alt key).

More info

I'm using tmux in my WSL session and bind Alt+Left to switch tmux window.
I found this problem when I'm switching windows, my windows get switched and also get Ctrl-D keystroke (and this closes my session...).
And I tried to input Alt+Left without tmux but with a keystroke recorder, that it shows I inputed Ctrl-D after Alt-Left (\e[1;3D\cD).

Keybinding part of my profiles.json:

"keybindings": [
        // Unbound all keybindings
        { "command": "unbound", "keys": ["ctrl+shift+w"] },
        { "command": "unbound", "keys": ["alt+f4"] },
        { "command": "unbound", "keys": ["ctrl+shift+c"] },
        { "command": "unbound", "keys": ["ctrl+shift+d"] },
        { "command": "unbound", "keys": ["ctrl+shift+t"] },
        { "command": "unbound", "keys": ["ctrl+shift+1"] },
        { "command": "unbound", "keys": ["ctrl+shift+2"] },
        { "command": "unbound", "keys": ["ctrl+shift+3"] },
        { "command": "unbound", "keys": ["ctrl+shift+4"] },
        { "command": "unbound", "keys": ["ctrl+shift+5"] },
        { "command": "unbound", "keys": ["ctrl+shift+6"] },
        { "command": "unbound", "keys": ["ctrl+shift+7"] },
        { "command": "unbound", "keys": ["ctrl+shift+8"] },
        { "command": "unbound", "keys": ["ctrl+shift+9"] },
        { "command": "unbound", "keys": ["ctrl+tab"] },
        { "command": "unbound", "keys": ["ctrl+shift+space"] },
        { "command": "unbound", "keys": ["ctrl+,"] },
        { "command": "unbound", "keys": ["ctrl+shift+v"] },
        { "command": "unbound", "keys": ["ctrl+shift+tab"] },
        { "command": "unbound", "keys": ["ctrl+shift+down"] },
        { "command": "unbound", "keys": ["ctrl+shift+pgdn"] },
        { "command": "unbound", "keys": ["ctrl+shift+up"] },
        { "command": "unbound", "keys": ["ctrl+shift+pgup"] },
        { "command": "unbound", "keys": ["ctrl+alt+1"] },
        { "command": "unbound", "keys": ["ctrl+alt+2"] },
        { "command": "unbound", "keys": ["ctrl+alt+3"] },
        { "command": "unbound", "keys": ["ctrl+alt+4"] },
        { "command": "unbound", "keys": ["ctrl+alt+5"] },
        { "command": "unbound", "keys": ["ctrl+alt+6"] },
        { "command": "unbound", "keys": ["ctrl+alt+7"] },
        { "command": "unbound", "keys": ["ctrl+alt+8"] },
        { "command": "unbound", "keys": ["ctrl+alt+9"] },
        { "command": "unbound", "keys": ["alt+left"] },
        // Customization here
        { "command": "closePane", "keys": ["ctrl+shift+w"] },
        { "command": "newTab", "keys": ["ctrl+shift+t"] },
        { "command": "paste", "keys": ["ctrl+shift+v"] },
        { "command": "openNewTabDropdown", "keys": ["ctrl+shift+space"] },
        { "command": "nextTab", "keys": ["ctrl+tab"] },
        { "command": "nextTab", "keys": ["ctrl+alt+right"] },
        { "command": "prevTab", "keys": ["ctrl+shift+tab"] },
        { "command": "prevTab", "keys": ["ctrl+alt+left"] },
        { "command": "switchToTab0", "keys": ["ctrl+alt+1"] },
        { "command": "switchToTab1", "keys": ["ctrl+alt+2"] },
        { "command": "switchToTab2", "keys": ["ctrl+alt+3"] },
        { "command": "switchToTab3", "keys": ["ctrl+alt+4"] },
        { "command": "switchToTab4", "keys": ["ctrl+alt+5"] },
        { "command": "switchToTab5", "keys": ["ctrl+alt+6"] },
        { "command": "switchToTab6", "keys": ["ctrl+alt+7"] },
        { "command": "switchToTab7", "keys": ["ctrl+alt+8"] },
        { "command": "switchToTab8", "keys": ["ctrl+alt+9"] }
    ]

Originally created by @davy-tw on GitHub (Oct 14, 2019).   # Environment Windows build number: 10.0.18363.418 Windows Terminal version (if applicable): 0.5.2762.0 # Steps to reproduce  In WSL session, press `Alt+Left` and release `Left` key then `Alt` key. # Expected behavior This should not input `Ctrl+D` # Actual behavior The terminal will execute `Alt+Left` keystroke and unexpected `Ctrl+D` keystroke (when releasing `Alt` key). # More info I'm using tmux in my WSL session and bind `Alt+Left` to switch tmux window. I found this problem when I'm switching windows, my windows get switched and also get `Ctrl-D` keystroke (and this closes my session...). And I tried to input `Alt+Left` without tmux but with a keystroke recorder, that it shows I inputed `Ctrl-D` after `Alt-Left` (`\e[1;3D\cD`). Keybinding part of my profiles.json: ```json "keybindings": [ // Unbound all keybindings { "command": "unbound", "keys": ["ctrl+shift+w"] }, { "command": "unbound", "keys": ["alt+f4"] }, { "command": "unbound", "keys": ["ctrl+shift+c"] }, { "command": "unbound", "keys": ["ctrl+shift+d"] }, { "command": "unbound", "keys": ["ctrl+shift+t"] }, { "command": "unbound", "keys": ["ctrl+shift+1"] }, { "command": "unbound", "keys": ["ctrl+shift+2"] }, { "command": "unbound", "keys": ["ctrl+shift+3"] }, { "command": "unbound", "keys": ["ctrl+shift+4"] }, { "command": "unbound", "keys": ["ctrl+shift+5"] }, { "command": "unbound", "keys": ["ctrl+shift+6"] }, { "command": "unbound", "keys": ["ctrl+shift+7"] }, { "command": "unbound", "keys": ["ctrl+shift+8"] }, { "command": "unbound", "keys": ["ctrl+shift+9"] }, { "command": "unbound", "keys": ["ctrl+tab"] }, { "command": "unbound", "keys": ["ctrl+shift+space"] }, { "command": "unbound", "keys": ["ctrl+,"] }, { "command": "unbound", "keys": ["ctrl+shift+v"] }, { "command": "unbound", "keys": ["ctrl+shift+tab"] }, { "command": "unbound", "keys": ["ctrl+shift+down"] }, { "command": "unbound", "keys": ["ctrl+shift+pgdn"] }, { "command": "unbound", "keys": ["ctrl+shift+up"] }, { "command": "unbound", "keys": ["ctrl+shift+pgup"] }, { "command": "unbound", "keys": ["ctrl+alt+1"] }, { "command": "unbound", "keys": ["ctrl+alt+2"] }, { "command": "unbound", "keys": ["ctrl+alt+3"] }, { "command": "unbound", "keys": ["ctrl+alt+4"] }, { "command": "unbound", "keys": ["ctrl+alt+5"] }, { "command": "unbound", "keys": ["ctrl+alt+6"] }, { "command": "unbound", "keys": ["ctrl+alt+7"] }, { "command": "unbound", "keys": ["ctrl+alt+8"] }, { "command": "unbound", "keys": ["ctrl+alt+9"] }, { "command": "unbound", "keys": ["alt+left"] }, // Customization here { "command": "closePane", "keys": ["ctrl+shift+w"] }, { "command": "newTab", "keys": ["ctrl+shift+t"] }, { "command": "paste", "keys": ["ctrl+shift+v"] }, { "command": "openNewTabDropdown", "keys": ["ctrl+shift+space"] }, { "command": "nextTab", "keys": ["ctrl+tab"] }, { "command": "nextTab", "keys": ["ctrl+alt+right"] }, { "command": "prevTab", "keys": ["ctrl+shift+tab"] }, { "command": "prevTab", "keys": ["ctrl+alt+left"] }, { "command": "switchToTab0", "keys": ["ctrl+alt+1"] }, { "command": "switchToTab1", "keys": ["ctrl+alt+2"] }, { "command": "switchToTab2", "keys": ["ctrl+alt+3"] }, { "command": "switchToTab3", "keys": ["ctrl+alt+4"] }, { "command": "switchToTab4", "keys": ["ctrl+alt+5"] }, { "command": "switchToTab5", "keys": ["ctrl+alt+6"] }, { "command": "switchToTab6", "keys": ["ctrl+alt+7"] }, { "command": "switchToTab7", "keys": ["ctrl+alt+8"] }, { "command": "switchToTab8", "keys": ["ctrl+alt+9"] } ] ```

claunia added the Resolution-Duplicate label 2026-01-30 23:48:00 +00:00