I believe its become like this after an update that i did on 16 jan. Didn't install any application or something that can cause for this. Anyone has the same problem? I restarted or shutdown few times. Didn't change anything. If i click any of panel icons its corrects it self. You'll see below. Any thoughts?
There seems to be a problem with the last update of
xserver-xorg-legacy-hwe-18.04 with Radeon graphics cards, which break the rendering of boxes and tooltips.
They just uploaded a fix in launchpad. Just update the packages to their newer versions
xserver-xorg-video-amdgpu-hwe-18.04:amd64 from 19.0.1-1~18.04.1 to 19.0.1-1ubuntu1~18.04.1 and xserver-xorg-video-ati-hwe-18.04:amd64 from 1:19.0.1-0ubuntu1~18.04.1 to 1:19.0.1-1ubuntu1~18.04.1 and xserver-xorg-video-radeon-hwe-18.04:amd64 from 1:19.0.1-0ubuntu1~18.04.1 to 1:19.0.1-1ubuntu1~18.04.1
Or download the
.deb files and install them with Eddy or
Take note, this are proposed packages and are still in testing. It worked for me, but it might not work for everyone.
More about the bug here.
UPDATE I might have an actual answer / workaround: booting with kernel 5.0 (instead of 5.3) makes these issues disappear. During boot, select "Advanced options for elementary", then "elementary, with Linux 5.0.0-37-generic" (instead of the default 5.3.0-26-generic option). With this older kernel, the screen update issues do not occur for me.
I'm seeing similar graphics errors across the system -- all sorts of display elements do not update until I mouse over them. Affected programs include Emacs, Firefox and the desktop background picture right after login.
(I am seeing this effect on other distributions as well, and have been using Elementary OS partly because it did not have that problem.)
I am using an hp spectre folio (Intel i5-8200Y with onboard graphics).
(I would post this as a comment but do not have enough reputation to do so; sorry)