[Bug 1780846] [NEW] After update 2018-07-08 menus and buttons are behaving badly

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After an update to

   Description:	Ubuntu 16.04.4 LTS
   Release:	16.04

Menus and buttons are behaving badly. This is a general issue, affecting most programs.
Text in buttons is not always being displayed.
When you mouse over an entry in a menu list the previous entry disappears
   e.g. the logout menu (power button icon at top right of panel)
Menu items are getting red backgrounds where they were not before.

Introduced by update done by update-manager on
   Last update Start-Date: 2018-07-08  21:25:10
Modified packages:

 libgles2-mesa:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libdrm-nouveau2:amd64 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libdrm-nouveau2:i386 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libapt-inst2.0:amd64 (1.2.26, 1.2.27)
 libegl1-mesa-dev:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 apt:amd64 (1.2.26, 1.2.27)
 libglapi-mesa:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libglapi-mesa:i386 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 mesa-common-dev:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libxatracker2:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libegl1-mesa:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libapt-pkg5.0:amd64 (1.2.26, 1.2.27)
 apache2-data:amd64 (2.4.18-2ubuntu3.8, 2.4.18-2ubuntu3.9)
 libgbm1:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libdrm-amdgpu1:amd64 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libdrm-amdgpu1:i386 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 firefox-locale-en:amd64 (60.0.2+build1-0ubuntu0.16.04.1, 61.0+build3-0ubuntu0.16.04.2)
 libwayland-egl1-mesa:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libdrm2:amd64 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libdrm2:i386 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libgl1-mesa-dev:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 apt-utils:amd64 (1.2.26, 1.2.27)
 libgl1-mesa-dri:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libgl1-mesa-dri:i386 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libosmesa6:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libosmesa6:i386 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libgl1-mesa-glx:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libgl1-mesa-glx:i386 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 libdrm-intel1:amd64 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libdrm-intel1:i386 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 apache2-bin:amd64 (2.4.18-2ubuntu3.8, 2.4.18-2ubuntu3.9)
 firefox:amd64 (60.0.2+build1-0ubuntu0.16.04.1, 61.0+build3-0ubuntu0.16.04.2)
 apt-transport-https:amd64 (1.2.26, 1.2.27)
 libdrm-radeon1:amd64 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libdrm-radeon1:i386 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 mesa-vdpau-drivers:amd64 (17.2.8-0ubuntu0~16.04.1, 18.0.5-0ubuntu0~16.04.1)
 apache2:amd64 (2.4.18-2ubuntu3.8, 2.4.18-2ubuntu3.9)
 apache2-utils:amd64 (2.4.18-2ubuntu3.8, 2.4.18-2ubuntu3.9)
 libdrm-dev:amd64 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)
 libdrm-common:amd64 (2.4.83-1~16.04.1, 2.4.91-2~16.04.1)

** Affects: libdrm (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: bot-comment
-- 
After update 2018-07-08 menus and buttons are behaving badly
https://bugs.launchpad.net/bugs/1780846
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