Missing layout updates #40419
Description
Observed with:
/css/CSS2/generated-content/before-after-dynamic-attr-001.xht/css/CSS2/selectors/first-letter-dynamic-002.xht/css/selectors/invalidation/negated-first-of-type-in-nonsubject-position.html
To reproduce, apply the following diff:
diff --git a/python/wpt/run.py b/python/wpt/run.py
index 595d17ed475..386c1c932fd 100644
--- a/python/wpt/run.py
+++ b/python/wpt/run.py
@@ -68,7 +68,7 @@ def run_tests(default_binary_path: str, **kwargs: Any) -> int:
# chunks and leads to more consistent timing on GitHub Actions.
set_if_none(kwargs, "chunk_type", "id_hash")
- kwargs["user_stylesheets"].append(os.path.join(SERVO_ROOT, "tests", "wpt", "tests", "fonts", "ahem.css"))
+ #kwargs["user_stylesheets"].append(os.path.join(SERVO_ROOT, "tests", "wpt", "tests", "fonts", "ahem.css"))
set_if_none(kwargs, "binary", default_binary_path)
set_if_none(kwargs, "webdriver_binary", default_binary_path)Then run either ./mach test-wpt /css/CSS2/generated-content/before-after-dynamic-attr-001.xht or ./mach run tests/wpt/tests/css/CSS2/generated-content/before-after-dynamic-attr-001.xht. The former consistently fails; the latter shows the dirty page content until the user's mouse touches the affected content.