1342001 - Double click is received in multi-e10s

Status: NEW

(Firefox :: Tabbed Browser, defect)

Description

[Andrea Marchesini [:baku]]

./browser/base/content/content.js:
ClickEventHandler.handleEvent() is called twice in container addon when the tabs are moved to a separate window.
I'm trying to reproduce this issue just with firefox nightly, but so far, the STR is:

1. having container addon installed: https://github.com/mozilla/testpilot-containers
2. open a container tab with a wikipedia page (or any other website, of course)
3. use the container addon to move the container tab in a separate window
4. do a middle-click (on linux, I don't know on mac/window) on a link

-> the link is opened twice.

What container addon does when moving tabs in a separate window is just:

// list is an array of tab (XULELements - tabbrowser...).
for (let tab of list) {
  newBrowserWindow.gBrowser.adoptTab(tab, pos++, false);
}

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

Is this a DOM issue or some browser issue? Like, are there unexpected DOM events dispatched?

Comment 2

[Andrea Marchesini [:baku]]

it seems a browser issue. no DOM involved here.

Comment 3

[:Gijs (away/busy until Mar 10)]

I don't have time to investigate this. It sounds like the container add-on is doing something strange if this doesn't reproduce when using 'move tab to new window' normally.