1101138 - e10s - Ever-loading page blocks other non-empty tabs (throbber instead of content), keyboard input in there accumulates and fires later (e.g., Ctrl+t).

Status: RESOLVED DUPLICATE of bug 1074971

(Firefox :: Tabbed Browser, defect)

Description

[[:Aleksej]]

2014-11-17-03-02-01-mozilla-central-firefox-36.0a1.ru.linux-x86_64
2014-11-18-03-02-01-mozilla-central-firefox-36.0a1.ru.linux-x86_64

1. Start Nightly.
2. Open a new tab (#3), try opening http://www.google.com/fonts/specimen/Fira+Sans in it.
-> It's loading indefinitely.  Do not wait, because it might load eventually.
3. Switch to tab #2.
-> It's showing a throbber.  It's OK if it stops showing a throbber and shows the normal page.
4. Press Ctrl+T a few times.
-> No new tab opens.
5. Close tab #3 (the ever-loading one).
-> Firefox hangs, for under a minute here.
-> Then Firefox unhangs, and the tabs from Ctrl+Ts in step 4 open.


I tried omitting step 3, but the page loaded and the Ctrl+Ts didn't fire later.

Comment 1

[Bill McCloskey [inactive unless it's an emergency] (:billm)]

This sounds like a combination of a CPOW hang when you close the tab and the keyboard issue in bug 1074971 causing Ctrl-T not to work.

Comment 2

[Jonathan Howard]

(Page opens fine for me.)
with;
setInterval(function(){s=new Date;do{}while(new Date-s<10000)},0);
in thimble, then switch out and back to tab to see throbber.

I can confirm while a page shows the throbber Ctrl+t & Ctrl+b are delayed. Ctrl+Tab, Alt+f are fine. (Not tried many combinations.) New tab button (,mouse in general) works fine.

Closing the throbbing page (even if a background tab) hangs firefox until tab eventually closes.