switch edit mode fails in Chrome
This manifests in several ways, see the browser test failures at
Chrome: https://integration.wikimedia.org/ci/view/BrowserTests/view/-All/job/browsertests-MobileFrontend-en.m.wikipedia.beta.wmflabs.org-linux-chrome-sauce/
Firefox: https://integration.wikimedia.org/ci/view/BrowserTests/view/-All/job/browsertests-MobileFrontend-en.m.wikipedia.beta.wmflabs.org-linux-firefox-sauce/
The common case for Chrome and Firefox:
As a logged-in user with access to VisualEditor, edit any page.
Attempt to switch from the wikitext editor to VE using the dropdown controls.
Nothing happens, VE does not show up. See screen shot.
The Firefox-only issue:
Attempt to edit a new page by supplying a bogus URL, e.g. http://en.m.wikipedia.beta.wmflabs.org/wiki/Foobarbaz
Clicking the edit icon does nothing.
Version: unspecified
Severity: major
Attached: