Titlebar is fully transparent on macOS 27

What Operating System(s) are you seeing this problem on?

macOS

Which Wayland compositor or X11 Window manager(s) are you using?

No response

WezTerm version

20260912-133823-2afb8364

Did you try the latest nightly build to see if the issue is better (or worse!) than your current version?

Yes, and I updated the version box above to show the version of the nightly that I tried

Describe the bug

The titlebar is way too transparent:

To Reproduce

Install the latest nightly on macOS 27

Configuration

Started with -n, same behavior, but my config file is only font size, theme, and keybinds

Expected Behavior

No response

Logs

Debug Overlay wezterm version: 20260912-133823-2afb8364 aarch64-apple-darwin Window Environment: macOS 27.0 (26A428) Lua Version: Lua 5.4 OpenGL: Apple M5 4.1 Metal - 91.7 Enter lua statements or expressions and hit Enter. Press ESC or CTRL-D to exit

That's it

Anything else?

No response