TextHeightUITests.foregroundColor renders differently on macOS

[Kyle-Ye]

Summary

TextHeightUITests/foregroundColor() fails its macOS snapshot comparison.

The rendered text differs from the SwiftUI reference even though both display lists place the two text items directly adjacent to each other.

Reproduction

The failing view is:

VStack {
    Text("Hello World")
    Text("From OpenSwiftUI")
        .foregroundStyle(.red)
}

Run TextHeightUITests/foregroundColor() on macOS and compare the OpenSwiftUI result with the SwiftUI reference.

Current behavior

OpenSwiftUI produces a snapshot mismatch for the foreground color example.

Display list comparison

OpenSwiftUI

View 0x0000000101d04980 at Time(seconds: 0.13566520833319373):
(display-list
  (item #:identity 1 #:version 7
    (frame (215.0 134.0; 71.0 16.0))
    (content-seed 15)
    (text "Hello World" #:size (71.0, 16.0)))
  (item #:identity 2 #:version 8
    (frame (195.0 150.0; 111.0 16.0))
    (content-seed 17)
    (text "From OpenSwiftUI" #:size (111.0, 16.0))))

SwiftUI

View 0x0000000158808200 at Time(seconds: 1.1519964583333149):
(display-list
  (item #:identity 1 #:version 37
    (frame (415.0 223.0; 70.5 16.0))
    (effect
      (item #:version 23
        (frame (0.0 0.0; 70.5 16.0))
        (content-seed 47)
        (text "Hello World" #:size (70.5, 16.0)))))
  (item #:identity 2 #:version 36
    (frame (394.5 239.0; 111.0 16.0))
    (effect
      (item #:version 21
        (frame (0.0 0.0; 111.0 16.0))
        (content-seed 43)
        (text "From OpenSwiftUI" #:size (111.0, 16.0))))))

Expected behavior

The OpenSwiftUI rendering should match the SwiftUI reference on macOS, allowing TextHeightUITests/foregroundColor() to pass.