296649 2025-07-29 13:56:13 -0700 Make window load event dispatch asynchronous to improve WPT compatibility. 2026-06-13 12:31:57 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 82931 InRadar P2 Normal --- 1 basuke basuke rbuis webkit-bug-importer oldest_to_newest 2133197 0 basuke 2025-07-29 13:56:13 -0700 Currently the event is firing synchronously. This is the reason many wpt tests using promise_test causes TIMEOUT like this code: ``` promise_test(async t => { // Wait for after the load event so that the navigation doesn't get converted // into a replace navigation. await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0)); ... ``` When the promise is created, window.onload is already fired and the promise is never resolved and TIMEOUT happens. Most of the tests under `imported/w3c/web-platform-tests/navigation-api/ordering-and-transition/ failed with TIMEOUT because of this. 2133198 1 basuke 2025-07-29 13:58:49 -0700 rdar://157048720 2133201 2 basuke 2025-07-29 14:06:17 -0700 Pull request: https://github.com/WebKit/WebKit/pull/48677 2134188 3 basuke 2025-08-04 07:30:04 -0700 *** Bug 277948 has been marked as a duplicate of this bug. *** 2138058 4 basuke 2025-08-21 12:23:28 -0700 Pull request: https://github.com/WebKit/WebKit/pull/49726 2220636 5 gsnedders 2026-06-13 12:31:57 -0700 *** This bug has been marked as a duplicate of bug 82931 ***