WebDriver/RemoteProtocol/WebDriver BiDi/Milestone 17

WebDriver BiDi Milestone 17 - In Planning

Goal: In this milestone, we are expanding WebDriver BiDi’s emulation features to make it easier to simulate locales, timezones, mobile devices etc. We are also adding support for retrieving network response bodies, which has been strongly requested by clients. Those features benefit existing WebDriver BiDi clients, and are also key requirements for Playwright adoption. Internally we keep supporting Desktop Test Engineering by improving our support for chrome privileged script evaluation and widget-level events.

Progress:

• Tracking spreadsheet

Queries:

• Completed Bugs

Milestone Backlog:

Full Query

ID	Summary	Priority	Fx points	Status	Assigned to
1344267	Marionette test files for chrome scope should not be shipped with Firefox	P2	5	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1797215	Send async "touch" events at the widget level instead of synthesized DOM events	P3	5	NEW
1821460	Handle actions "Input state" on the top-level browsing context (navigable) and per WebDriver session	P3	3	NEW
1841125	`browsingContext.create` fails after abandoned `browsingContext.print` via `browsingContext.close`	P3	3	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1848958	Send async "mouse" events at the widget level instead of synthesized DOM events	P2	5	NEW
1851788	Only accept content browsing context ids for BiDi commands when "system access" is not enabled	P2	5	NEW
1852529	[wdspec] Improve "scroll" tests for "wheel" input type for both WebDriver classic and BiDi	P2	3	ASSIGNED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1852986	Enable Marionette unit tests with Wayland	P3	3	NEW
1855045	Implement "input.fileDialogOpened" event	P2	5	NEW
1874365	Implement the "browsingContext.downloadWillBegin" event	P2	3	NEW
1877187	Add stacktrace to "network.Initiator" type for "network.BeforeRequestSent"	P3	3	NEW
1891028	Opening a tab or window should potentially wait for the "browser-delayed-startup-finished" notification	P3	2	NEW
1904859	Check performance when dispatching events in the parent process	P2	3	NEW
1904884	[wdspec] Improve tests for "touch" input type for both WebDriver classic and BiDi	P3	3	NEW
1905086	Support automatic user prompt handling in WebDriver BiDi	P3	3	NEW
1914407	Investigate navigation errors when navigation gets redirected or interrupted	P2	3	NEW
1931528	Revert workaround for asyncOpenTime=0 in webdriver-bidi	P3	---	RESOLVED	biyul.dev
1934326	"waitForCurrentWindowGlobal()" should check for discarded browser to not unnecessarily wait for the window global	P3	2	NEW
1936766	Add Worker helpers in the parent process to monitor and retrieve worker debuggers	P2	3	NEW
1936769	Implement "script.realmDestroyed" event for worker realms	P3	3	NEW
1936770	Implement "script.realmCreated" event for worker realms	P3	5	NEW
1941813	Include top-most frame of the stacktrace to all "log.entryAdded" events for Console API messages	P3	3	NEW
1943038	geckodriver doesn't find minidump files for content process crashes	P3	3	NEW
1944568	Extend the "browsingContext.getTree" command to support retrieval of browsing contexts for open ChromeWindows	P2	3	NEW
1944570	Support executing “script.evaluate” and “script.callFunction” for browsing contexts in the parent process	P2	5	NEW
1955284	[wdspec] Improve tests for "mouse" input type for both WebDriver classic and BiDi	P2	3	NEW
1956885	[wdspec] Add a fixture for WebDriver BiDi tests to keep a list of installed web extensions and remove them at the end of the test	P3	2	NEW
1957706	Puppeteer node based tests should use toolchains rather than installing from npm for each test run	P3	3	NEW
1957746	All the WebAuthentication related commands are broken	P2	3	ASSIGNED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1963003	[wdspec] Crash minidump files are not processed by wptrunner	P3	5	NEW
1964905	Events for user prompts opened or closed within an iframe do not reference the iframe's context ID	P3	2	NEW
1965465	[wdspec] 2025-Q3 Clean-up meta data for multiple statuses	P3	3	ASSIGNED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1967129	Perma /html/user-activation/activation-trigger-mouse-right.html | Activation through right-click mouse event - assert_true: mousedown event should result in activation expected true got false | single tracking bug	P5	1	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1968855	Add a "widget" event synthesization API for mouse events	P2	3	ASSIGNED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1968951	Add an API to BrowsingContext to override locale in JS APIs	P2	5	RESOLVED	Alexandra Borovova [:Sasha]
1968952	Add "emulation.setLocaleOverride" command	P2	5	RESOLVED	Alexandra Borovova [:Sasha]
1969898	Rename Proxy capability class to ProxyConfiguration	P3	---	RESOLVED	sabina
1970293	Implement "browsingContext.downloadEnd" event	P3	3	NEW
1970330	Add CSP directive for reftest.xhtml to allow removing the exception for CSP checks for Marionette	P2	2	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1971488	"storage.getCookies" can return cookies with "sameSite=none" and "secure=false" on HTTP pages, but this is invalid for "storage.setCookies"	P2	2	RESOLVED	Alexandra Borovova [:Sasha]
1971778	Implement the network.addDataCollector command	P2	8	ASSIGNED	Julian Descottes [:jdescottes]
1971779	Implement the network.disownData command	P2	5	NEW
1971780	Implement the network.getData command	P2	5	NEW
1971781	Implement the network.removeDataCollector command	P2	5	NEW
1971979	deltaX and deltaY for widget wheel scroll events have to take the layout viewport into account	P3	2	ASSIGNED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1972670	Remove FTP proxy support from WebDriver capabilities	P3	2	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1973730	Wait for nsIBrowserChild.contentTransformReceived() before dispatching events	P2	3	NEW
1974167	Add "emulation.setScreenOrientationOverride" command	P2	3	NEW
1974262	Firefox UI tests call marionette with an outdated argument format	P3	---	RESOLVED	Bas Schouten (:bas.schouten)
1974394	When setting cookies the expiry value is now limited to 400 days	P3	---	RESOLVED	Andrea Marchesini [:baku]
1974534	Perma [tier 2] /css/css-scroll-snap/overscroll-snap.html | snapport covered by snap area doesn't jump - assert_approx_equals: scroller is scrolled to its bottom and not its top. expected 1543 +/- 1 but got 362	P2	1	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1974535	Perma [tier 2] /css/css-scroll-snap/snap-events/scrollsnapchange/scrollsnapchange-scrolling-non-snapping-axis.tentative.html | wheel scroll on non-snapping axis doesn't trigger scrollsnapchange - expected TIMEOUT	P2	1	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1975037	Perma [tier 2] /css/css-scroll-snap/snap-after-relayout/multiple-aligned-targets/common-to-both-axes-supercedes-first-in-tree-order.html | single tracking bug	P2	2	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1975140	Reset scroll position before each test in test_click_scrolling.py	P2	1	RESOLVED	Henrik Skupin [:whimboo][⌚️UTC+2] (away 07/21 - 08/08)
1976004	Perma /webdriver/tests/bidi/external/permissions/set_permission/set_permission.py | test_set_permission - AssertionError: assert 'granted' == 'prompt' | single tracking bug	P5	2	RESOLVED	Alexandra Borovova [:Sasha]
1976493	Add an API to BrowsingContext to override timezone in JS APIs	P2	13	ASSIGNED	Alexandra Borovova [:Sasha]
1976504	Remove support for "localize_entity" from localization module	P3	---	RESOLVED	biyul.dev
1976716	Allow DevTools NetworkResponseListener to stop decoding responses	P2	3	ASSIGNED	Julian Descottes [:jdescottes]
1977180	noProxy set using "browsingContext.createUserContext" doesn't work with host patterns like ".mozilla.org"	P2	2	ASSIGNED	Alexandra Borovova [:Sasha]
1977205	Throw an error when trying to add a cookie with "sameSite=none" and "secure=false"	P2	2	RESOLVED	Alexandra Borovova [:Sasha]

60 Total; 41 Open (68.33%); 19 Resolved (31.67%); 0 Verified (0%);