macOS 27: tab bar renders clipped/missing with macos-titlebar-style = tabs

[abgaryanharutyun]

Issue Description

With macos-titlebar-style = tabs on macOS 27, the tab bar renders broken: only one tab shows as a small pill at the far right, clipped ("…e ⌘2"), and the first tab isn't drawn at all. With macos-titlebar-style = native, tabs render correctly.

Expected Behavior

All tabs are visible in the titlebar.

Actual Behavior

The tab bar is clipped to the right edge; only part of one tab is visible.

Reproduction Steps

1. Use the config below
2. Open a window, press Cmd+T to open a second tab
3. The tab bar renders clipped / tabs missing

Ghostty Version

Ghostty 1.3.1 (stable), Zig 0.15.2, ReleaseFast, renderer Metal, font engine coretext

OS Version Information

macOS 27.0 (Apple Silicon)

Minimal Ghostty Configuration

macos-titlebar-style = tabs
background-opacity = 0.9
background-blur = macos-glass-clear

Additional Relevant Configuration

Works correctly with macos-titlebar-style = native.

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I used Claude Code to help diagnose this and draft the report.

[MessiasLima]

same here

[chasegiunta]

on the tip release (17903), I'm not sure the tab bar gets clipped anymore, but when closing the active tab, the tab bar completely disappears

[aleksandrgordienko]

I'm experiencing the same issue with tab bar on MacOS 27, Ghostty Version 1.3.1 (Build 15212 Commit 332b2ae)

[trag1c]

This has been fixed on tip for some time now; will be part of the next release this month.

[bytaesu]

🐐