Public bug reported:

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)

** Affects: ubuntu-themes (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to ubuntu-themes in Ubuntu.
https://bugs.launchpad.net/bugs/1821768

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

Status in ubuntu-themes package in Ubuntu:
  New

Bug description:
  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)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1821768/+subscriptions

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