Description:
tables/mozilla/bugs/bug2479-3.html

The first failure I saw on the dashboard was on 12/6/2022 at 257452@main.

This issue can be bisected to 257446@main using the command: 
run-webkit-tests --release --iterations=1   tables/mozilla/bugs/bug2479-3.html

History:
https://results.webkit.org/?suite=layout-tests&test=tables%2Fmozilla%2Fbugs%2Fbug2479-3.html&platform=mac

Diff:
@@ -66,16 +66,16 @@
         RenderBlock {P} at (0,0) size 769x38
           RenderText {#text} at (0,0) size 267x18
             text run at (0,0) width 267: "How does your browser fare on this test? "
-          RenderMenuList {SELECT} at (266,1) size 243x18 [bgcolor=#FFFFFF]
-            RenderBlock (anonymous) at (0,0) size 242x18
+          RenderMenuList {SELECT} at (266,1) size 242x18 [bgcolor=#FFFFFF]
+            RenderBlock (anonymous) at (0,0) size 241x18
               RenderText at (8,2) size 139x13
                 text run at (8,2) width 139: "The test renders correctly."
-          RenderText {#text} at (508,0) size 5x18
-            text run at (508,0) width 5: " "
+          RenderText {#text} at (507,0) size 5x18
+            text run at (507,0) width 5: " "
           RenderInline {LABEL} at (0,0) size 220x18
-            RenderText {#text} at (512,0) size 73x18
-              text run at (512,0) width 73: "Comment: "
-            RenderTextControl {INPUT} at (584,0) size 148x19 [bgcolor=#FFFFFF] [border: (2px inset #000000)]
+            RenderText {#text} at (511,0) size 73x18
+              text run at (511,0) width 73: "Comment: "
+            RenderTextControl {INPUT} at (583,0) size 148x19 [bgcolor=#FFFFFF] [border: (2px inset #000000)]
           RenderText {#text} at (0,0) size 0x0
           RenderButton {INPUT} at (0,20) size 53x18 [color=#000000D8] [bgcolor=#C0C0C0]
             RenderBlock (anonymous) at (8,2) size 37x13
@@ -114,7 +114,7 @@
       RenderBlock {P} at (0,622) size 769x19
         RenderText {#text} at (0,0) size 185x18
           text run at (0,0) width 185: "Last updated in March 1999."
-layer at (595,473) size 141x13
+layer at (594,473) size 141x13
   RenderBlock {DIV} at (3,3) size 141x13
 layer at (8,524) size 769x2 clip at (0,0) size 0x0
   RenderBlock {HR} at (0,502) size 769x3 [border: (1px inset #000000)]