Ghostty Window Resizes Itself

[blacktop]

Issue Description

I use a window manager to push Ghostty to one half of the screen, but when I open new apps Ghostty always resizes itself and I have to correct it.

Expected Behavior

Apps should stay put when moved to fill half the screen

Actual Behavior

It resizes a bit on the bottom.

Reproduction Steps

ghostty.mov

Ghostty Logs

No response

Ghostty Version

Ghostty 1.1.3

Version
  - version: 1.1.3
  - channel: stable
Build Config
  - Zig version: 0.13.0
  - build mode : builtin.OptimizeMode.ReleaseFast
  - app runtime: apprt.Runtime.none
  - font engine: font.main.Backend.coretext
  - renderer   : renderer.Metal
  - libxev     : main.Backend.kqueue

OS Version Information

macOS 15.5

(Linux only) Display Server

None

(Linux only) Desktop Environment/Window Manager

No response

Minimal Ghostty Configuration

window-save-state = always
window-decoration = true
window-theme = "dark"
# macos-titlebar-style = hidden
macos-option-as-alt = true
macos-auto-secure-input = true
macos-secure-input-indication= true
# mouse-hide-while-typing = true
confirm-close-surface = false
quit-after-last-window-closed = true
scrollback-limit = 100_000_000
keybind = super+shift+home=scroll_to_top

# Shell
shell-integration = fish
shell-integration-features = cursor,no-sudo,title

# Clipboard (ask, allow or deny)
clipboard-read = ask
clipboard-trim-trailing-spaces = true
clipboard-paste-protection = true
clipboard-paste-bracketed-safe = true

# Theme
# theme = nord
# theme = tokyonight-storm
# theme = catppuccin-mocha
# theme = catppuccin-frappe
theme = rose-pine-moon

# green
# palette = 2=#3e8fb0
# palette = 10=#3e8fb0
# blue
# palette = 4=#9ccfd8
# palette = 12=#9ccfd8

# Style
background-opacity = 0.9
unfocused-split-opacity = 0.7
background-blur-radius = 20

cursor-style-blink = true
cursor-style = bar

# Default font
font-family             = "OperatorMono Nerd Font Mono"
# font-family             = "MonoLisa Nerd Font"
# font-style              = "Medium"
# Bold
# font-family-bold        = "MonoLisa Nerd Font Mono"
# font-style-bold         = "ExtraBold"
# Italic
# font-family-italic      = "MonoLisa Nerd Font Mono"
# font-style-italic       = "Italic"
# Bold and Italic
# font-family-bold-italic = "MonoLisa Nerd Font Mono"
# font-style-bold-italic  = "ExtraBold Italic"

font-size = 13
font-thicken = true
font-feature = zero
# font-feature = ss01
# MonoLisa script
font-feature = ss02
font-feature = ss03
font-feature = ss04
font-feature = ss05
font-feature = ss06
font-feature = ss07
font-feature = ss08
font-feature = ss09
font-feature = ss10
# MonoLisa centered hexadecimal '0xF'
font-feature = ss11
# MonoLisa strikethrough '$'
font-feature = ss13
font-feature = -ss14
font-feature = ss18
font-feature = calt
font-feature = liga
#font-variation = "wght=800"
bold-is-bright = false

# https://github.com/ryanoasis/nerd-fonts/wiki/Glyph-Sets-and-Code-Points
# powerline & powerline-extras
font-codepoint-map = U+e0b0-U+e0b3,U+e0b4-U+e0c8,U+e0cc-U+e0d4,U+e0ca= MonoLisa Nerd Font Mono

# font-awesome
font-codepoint-map = U+f000-U+f2e0,U+e200-U+e2a9= MonoLisa Nerd Font Mono

# seti-ui
font-codepoint-map = U+e5fa-U+e6b1= MonoLisa Nerd Font Mono

# codicons
font-codepoint-map = U+ea60-U+ebeb= MonoLisa Nerd Font Mono

Additional Relevant Configuration

No response

I acknowledge that:

• I have reviewed the FAQ and confirm that my issue is NOT among them.
• I have searched the Ghostty repository (both open and closed Discussions and Issues) and confirm this is not a duplicate of an existing issue or discussion.
• I have checked the "Preview" tab on all text fields to ensure that everything looks right, and have wrapped all configuration and code in code blocks with a group of three backticks (```) on separate lines.

[00-kat]

Which window manager? Is that really the minimum configuration?

[blacktop]

I'm using Magnet and ya I copy-pasta'd my config minus these key bindings

keybind = ctrl+shift+j=write_screen_file:paste
keybind = super+f=write_screen_file:open
keybind = global:cmd+alt+s=toggle_quick_terminal

[blacktop]

I just tried Quiting Magnet and using the built-in Sequoia window manger to set Ghostty to one-half the screen and couldn't get it to do the resize thing.

However, ghostty is the only app that does the resize thing with Magnet.

[mitchellh]

I'm going to say this is an upstream issue unless this can be shown to happen with multiple apps. No other user has reported anything like this so I'd like to ask you to dig into it yourself or find us more details then we can promote this. Thanks.

[austin-karren]

I'm currently having this issue

[00-kat]

Open a new discussion.