After updating to 1:7.9.0-0ubuntu1~16.04.1, I noticed that all GTK3 tooltips are corrupted. See the attached screen cast. Other tooltips are not affected.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-video-radeon-hwe-16.04 1:7.9.0-0ubuntu1~16.04.1
ProcVersionSignature: Ubuntu 4.10.0-28.32~16.04.2-generic 4.10.17
Uname: Linux 4.10.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Aug 1 12:50:06 2017
InstallationDate: Installed on 2017-06-21 (40 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
SourcePackage: xserver-xorg-video-ati-hwe-16.04
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
InstallationDate: Installed on 2017-06-21 (41 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
Package: xserver-xorg-video-ati-hwe-16.04 1:7.9.0-0ubuntu1~16.04.1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 4.10.0-28.32~16.04.2-generic 4.10.17
Tags: xenial
Uname: Linux 4.10.0-28-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo
_MarkForUpload: True
install xdiagnose and run 'apport-collect 1707884'