This bug was fixed in the package xserver-xorg-video-ati-hwe-18.04 - 1:19.0.1-0ubuntu1~18.04.1
--------------- xserver-xorg-video-ati-hwe-18.04 (1:19.0.1-0ubuntu1~18.04.1) bionic; urgency=medium
* Backport for 18.04.3 HWE stack update. (LP: #1824111)
-- Timo Aaltonen <email address hidden> Wed, 29 May 2019 13:19:14 +0300
This bug was fixed in the package xserver- xorg-video- ati-hwe- 18.04 - 1:19.0. 1-0ubuntu1~ 18.04.1
--------------- xorg-video- ati-hwe- 18.04 (1:19.0. 1-0ubuntu1~ 18.04.1) bionic; urgency=medium
xserver-
* Backport for 18.04.3 HWE stack update. (LP: #1824111)
-- Timo Aaltonen <email address hidden> Wed, 29 May 2019 13:19:14 +0300