I'm able to reproduce the faulty on bionic (not upgraded from xenial),
with GTK_IM_MODULE=xim and an empty .xinputrc.
Can also confirm the workaround suggested by Heiko L seems to fix this
issue, by changing /usr/share/themes/Ambiance/gtk-3.20/gtk.css to this:
> textview text {
> background-color: white;
> }
> scrollbar {
> background-color: white;
> }
> @import url("gtk-main.css");
This worked immediately after restarting gnome-calculator (installed
from deb, not snap) and gedit, no other system changes were required.
** Package changed: gtk+3.0 (Ubuntu) => ubuntu
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https://bugs.launchpad.net/bugs/1760818
Title:
gedit and gnome-calculator transparency/graphics corruption issue when
GTK_IM_MODULE=xim is set
Status in Ubuntu:
Confirmed
Status in im-config package in Ubuntu:
Confirmed
Bug description:
In a "Ubuntu" (Xorg) session on 18.04 gedit and gnome-calculator
suffer from a graphics issue where parts of their windows hold parts
of wallpaper or other windows' contents as background.
See attached screenshot.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: light-themes 16.10+18.04.20180328-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.9-0ubuntu2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr 3 09:12:31 2018
PackageArchitecture: all
SourcePackage: ubuntu-themes
UpgradeStatus: Upgraded to bionic on 2018-02-07 (54 days ago)
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