Java-gtk3 theming has many artefacts after updating to openjdk-11 in bionic-proposed

[Amr Ibrahim]

Openjdk-11 is now in bionic-proposed, and apparently it has switched to gtk3. The gtk3-java theming in Ambiance theme is very incomplete in Bionic. I can see a lot of theming artefacts in scilab (default look) and jabref (after switching to gtk look&feel) from bionic-proposed.

Steps to compare between java-gtk2 and java-gtk3 theming in Ambiance on Bionic:

A. For java-gtk2:
1. Don't update to openjdk-11 in bionic-proposed
2. Install jabref 3.8.2+ds-3
3. Change the look&feel in Preferences to Gtk
4. Notice that the app is properly themed

B. For java-gtk3:
5. Install jabref 3.8.2+ds-12~18.04 from bionic-proposed
6. Change the look&feel in Preferences to Gtk
5. Notice that the theming has many artefacts compared to the previous version

The same steps can be followed to compare scilab before and after.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: light-themes 16.10+18.04.20181005-0ubuntu1
ProcVersionSignature: Ubuntu 4.18.0-16.17~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-16-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 26 16:17:52 2019
InstallationDate: Installed on 2018-11-29 (116 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
SourcePackage: ubuntu-themes
UpgradeStatus: No upgrade log present (probably fresh install)

[Tiago Stürmer Daitx (tdaitx)]

Could you please take a look at bug #1770278 and look if the screenshot with the artifacts is the same/similar to what you are seeing here?

[Amr Ibrahim (amribrahim1987)]

Yes, the screenshots are similar.

[Matthias Klose (doko)]

now fixed in bionic-proposed and cosmic-proposed

[Amr Ibrahim (amribrahim1987)]

I confirm that theming reverted to gtk2 and jabref is now properly themed.