The Juggler JS in upstream Playwright calls win.windowUtils.jugglerSendMouseEvent
at four sites, but when the Juggler was ported FF146 -> FF150 the matching C++
patch to nsIDOMWindowUtils.idl + nsDOMWindowUtils.cpp was dropped. Result: every
page.mouse.*, page.click(selector), locator.click(), page.hover(), mouse.wheel()
threw "win.windowUtils.jugglerSendMouseEvent is not a function" on first call.
The fix is shipped in the patched Firefox source (feder-cr/firefox-stealth):
six call sites in juggler/protocol/PageHandler.js and juggler/content/PageAgent.js
were swapped to win.synthesizeMouseEvent — a Mozilla chrome-scope helper that is
already present in FF150. scrollRectIntoViewIfNeeded was also guarded at the two
PageHandler.js sites where it was called unconditionally on the FF150
_linkedBrowser, which no longer exposes that method.
This invisible_playwright release adds the regression suite in tests/test_mouse.py
(12 cases inspired by microsoft/playwright-python/tests/async/test_click.py),
the CHANGELOG, and the version bump. The patched Firefox archive on GitHub
Releases must be refreshed before users actually receive the fix; the
BINARY_VERSION bump to firefox-2 will land with that asset.
Reporter: @trob9 (issue #9) — provided ready-to-apply JS patches, 4-line minimal
repro, and confirmed reCAPTCHA v3 = 0.90 holds after the swap.
feder-cr
589c848e07