macOS: weird background color when opening fullscreen

[tindt4869]

When entering fullscreen mode, the ghostty background color look like my LED screen died.

Screenshots:

Before fullscreen

After fullscreen

My ghostty config

theme = rose-pine-dawn
adjust-cell-height = 20%
font-size = 13.5

[mitchellh]

Are you on an Intel Mac? There's a known Metal GPU driver bug on Intel that causes this.

[sitsofe]

(This sounds similar to #3352)