Bug#843810: libgtk-3-0: gtk3 >= 3.21.4-1 does not show a menu in Firefox, virt-manager and probably many others

[Marc-Christian Petersen]

Package: libgtk-3-0
Version: 3.22.3-1
Severity: important

Dear Maintainer,

there seems to be a problem with gtk3 >= 3.21.4-1. Please see #839029 also.
When using gtk3 3.21.4-1 or above, virt-manager, Firefox and maybe also others
are not able to show a menu (when pressing Alt-F for example). Downgrading gtk3
to 3.20.9-1 fixes it, so Firefox and virt-manager are usable again.

Do you have an idea what's wrong with gtk3 >= 3.21?

There's also a bug report for latest Ubuntu release:
https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/1556301

Thank you!

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.30-grsec (SMP w/8 CPU cores; PREEMPT)
Locale: LANG=C, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: sysvinit (via /sbin/init)

Versions of packages libgtk-3-0 depends on:
ii  adwaita-icon-theme                      3.22.0-1
ii  hicolor-icon-theme                      0.15-1
ii  libatk-bridge2.0-0                      2.22.0-1
ii  libatk1.0-0                             2.22.0-1
ii  libc6                                   2.24-5
ii  libcairo-gobject2                       1.14.6-1.1
ii  libcairo2                               1.14.6-1.1
ii  libcolord2                              1.3.3-2
ii  libcups2                                2.2.1-2
ii  libepoxy0                               1.3.1-1
ii  libfontconfig1                          2.11.0-6.7
ii  libfreetype6                            2.6.3-3+b1
ii  libgdk-pixbuf2.0-0                      2.36.0-1
ii  libglib2.0-0                            2.50.2-1
pn  libgtk-3-common                         <none>
ii  libjson-glib-1.0-0                      1.2.2-1
ii  libpango-1.0-0                          1.40.3-3
ii  libpangocairo-1.0-0                     1.40.3-3
ii  libpangoft2-1.0-0                       1.40.3-3
ii  librest-0.7-0                           0.8.0-2
ii  libsoup2.4-1                            2.56.0-1
ii  libwayland-client0                      1.11.0-2
ii  libwayland-cursor0                      1.11.0-2
ii  libwayland-egl1-mesa [libwayland-egl1]  12.0.3-3
ii  libx11-6                                2:1.6.3-1
ii  libxcomposite1                          1:0.4.4-1
ii  libxcursor1                             1:1.1.14-1+b1
ii  libxdamage1                             1:1.1.4-2+b1
ii  libxext6                                2:1.3.3-1
ii  libxfixes3                              1:5.0.2-1
ii  libxi6                                  2:1.7.6-1.1
ii  libxinerama1                            2:1.1.3-1+b1
ii  libxkbcommon0                           0.6.1-1
ii  libxml2                                 2.9.4+dfsg1-2.1
ii  libxrandr2                              2:1.5.0-1
ii  shared-mime-info                        1.7-1

Versions of packages libgtk-3-0 recommends:
ii  libgtk-3-bin  3.20.9-1

Versions of packages libgtk-3-0 suggests:
pn  gvfs             <none>
ii  librsvg2-common  2.40.16-1

-- no debconf information

-- 
Kind regards
	Marc-Christian Petersen