Bug 259528

fast/attachment/mac/wide-attachment-image-controls-basic.html This test is a flaky failure on macOS Monterey and above. HISTORY: https://results.webkit.org/?suite=layout-tests&test=fast%2Fattachment%2Fmac%2Fwide-attachment-image-controls-basic.html TEXT DIFF: RenderBody {BODY} at (8,8) size 784x82 RenderAttachment {ATTACHMENT} at (1,1) size 266x80 RenderFlexibleBox {DIV} at (0,0) size 266x80 [bgcolor=#0000000D] - RenderGrid {DIV} at (14,14) size 0x52 - RenderImage {IMG} at (0,26) size 0x0 - RenderFlexibleBox {DIV} at (32,0) size 210x80 - RenderGrid {DIV} at (0,40) size 210x0 - RenderText {#text} at (268,26) size 4x18 - text run at (268,26) width 4: " " - RenderImage {IMG} at (272,20) size 20x20 + RenderGrid {DIV} at (14,14) size 52x52 + RenderImage {IMG} at (0,0) size 52x52 + RenderFlexibleBox {DIV} at (84,0) size 158x80 + RenderGrid {DIV} at (0,40) size 158x0 + RenderText {#text} at (268,52) size 4x18 + text run at (268,52) width 4: " " + RenderImage {IMG} at (272,46) size 20x20 RenderText {#text} at (0,0) size 0x0 layer at (9,9) size 266x80 RenderBlock (relative positioned) {DIV} at (0,0) size 266x80 [color=#00000000] DIFF URL: https://build.webkit.org/results/Apple-Ventura-Release-AppleSilicon-WK2-Tests/266314@main%20(4170)/fast/attachment/mac/wide-attachment-image-controls-basic-pretty-diff.html REPRODUCIBILITY: I was able to reproduce this bug on macOS Ventura Release ToT running the test as follows: run-webkit-tests --iterations 500 --verbose fast/attachment/mac/wide-attachment-image-controls-basic.html REGRESSION: I was able to bisect a regression point via local testing and the flakiness dashboard. This test reproduced at 266045@main, but it did not reproduce at 266044@main. Changes at 266045@main appear to be related to this error, but more investigation is needed to determine for sure.