REGRESSION(r288944): [Monterey] fonts/monospace.html is a constant text failure

[Dawn Morningstar]

fonts/monospace.html

Is a constant text failure on Monterey.

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=fonts%2Fmonospace.html

DIFF:
RenderText {#text} at (0,84) size 753x62
               text run at (0,84) width 753: "  ! \" # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C"
               text run at (0,105) width 753: "D E F G H I J K L M N O P Q R S T U V W X Y Z [ \\ ] ^ _ ` a b c d e f g"
-              text run at (0,126) width 487: "h i j k l m n o p q r s t u v w x y z { | } > "
-          RenderBR {BR} at (486,126) size 1x20
+              text run at (0,126) width 488: "h i j k l m n o p q r s t u v w x y z { | } > "
+          RenderBR {BR} at (487,126) size 1x20
           RenderInline {I} at (0,0) size 759x62
             RenderText {#text} at (0,147) size 759x62
               text run at (0,147) width 759: "  ! \" # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G"
BUILD:
https://build.webkit.org/results/Apple-Monterey-Debug-AppleSilicon-WK2-Tests/r289739%20(1076)/fonts/monospace-diff.txt

[Radar WebKit Bug Importer]

<rdar://problem/88934504>

[Dawn Morningstar]

Failure was reproduced at Monterey production TOT using the following test:
run-webkit-test fonts/monospace.html

Failure was also reproducible at 288944 but not at 288943.

It appears that changes submitted in 288944 caused this failure:
https://trac.webkit.org/changeset/288944/webkit

[Dawn Morningstar]

Created attachment 452052 [details]
Patch

[Truitt Savell]

Comment on attachment 452052 [details]
Patch

Clearing flags on attachment: 452052

Committed r289834 (247282@trunk): <https://commits.webkit.org/247282@trunk>

[Dawn Morningstar]

Rebase appears successful.