Bug#856911: firefox: Firefox menus (right-click, hamburger, top) often do not open

[Matthew Flaschen]

Package: firefox
Version: 51.0.1-3~bpo80+1
Severity: important
Tags: upstream

Dear Maintainer,

Filed upstream at https://bugzilla.mozilla.org/show_bug.cgi?id=1344620

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0
Build ID: 20170125094131

Steps to reproduce:

I'm on Firefox 51 on Debian Jessie.  This is reproducible both on upstream firefox (from getfirefox.com) and on the Debian-packaged one (still 51, from below sources.list.d):

---
deb http://mozilla.debian.net/ jessie-backports firefox-release
deb-src http://mozilla.debian.net/ jessie-backports firefox-release
---

1. Create a fresh profile (or even a fresh OS user).
2. Go to example.com (or any other site)
3. Try to open right-click menus, the menus at the top, and the hamburger menu



Actual results:

Often these menus (right-click menus, the menus at the top, and the hamburger menu) will not open.

It then sometimes resumes working.



Expected results:

The menus should open normally each time.



-- Package-specific info:


-- Addons package information

-- System Information:
Debian Release: 8.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages firefox depends on:
ii  debianutils               4.4+b1
ii  fontconfig                2.11.0-6.3+deb8u1
ii  libasound2                1.0.28-1
ii  libatk1.0-0               2.14.0-1
ii  libc6                     2.19-18+deb8u7
ii  libcairo-gobject2         1.14.0-2.1+deb8u2
ii  libcairo2                 1.14.0-2.1+deb8u2
ii  libdbus-1-3               1.8.22-0+deb8u1
ii  libdbus-glib-1-2          0.102-1
ii  libevent-2.0-5            2.0.21-stable-2+deb8u1
ii  libffi6                   3.1-2+b2
ii  libfontconfig1            2.11.0-6.3+deb8u1
ii  libfreetype6              2.5.2-3+deb8u1
ii  libgcc1                   1:4.9.2-10
ii  libgdk-pixbuf2.0-0        2.31.1-2+deb8u5
ii  libglib2.0-0              2.42.1-1+b1
ii  libgtk-3-0                3.14.5-1+deb8u1
ii  libgtk2.0-0               2.24.25-3+deb8u1
ii  libhunspell-1.3-0         1.3.3-3
ii  libpango-1.0-0            1.36.8-3
ii  libsqlite3-0              3.8.7.1-1+deb8u2
ii  libstartup-notification0  0.12-4
ii  libstdc++6                4.9.2-10
ii  libx11-6                  2:1.6.2-3
ii  libx11-xcb1               2:1.6.2-3
ii  libxcb-shm0               1.10-3+b1
ii  libxcb1                   1.10-3+b1
ii  libxcomposite1            1:0.4.4-1
ii  libxdamage1               1:1.1.4-2+b1
ii  libxext6                  2:1.3.3-1
ii  libxfixes3                1:5.0.1-2+b2
ii  libxrender1               1:0.9.8-1+b1
ii  libxt6                    1:1.1.4-1+b1
ii  procps                    2:3.3.9-9
ii  zlib1g                    1:1.2.8.dfsg-2+b1

firefox recommends no packages.

Versions of packages firefox suggests:
pn  fonts-lmodern          <none>
pn  fonts-stix | otf-stix  <none>
ii  libcanberra0           0.30-2.1
ii  libgssapi-krb5-2       1.12.1+dfsg-19+deb8u2
pn  mozplugger             <none>

-- no debconf information