Treeview disclosure arrows look optically too small when highligted

[Guido Zoellner]

The dropdown arrow (triangle) pointing sideways disappears, or more precisely is hardly visible because there seems to be a kind of transparent border around it, when a package in Ubuntu software updates is marked. The same applies when the dropdown arrow is clicked and now is pointing downwards.

The GTK theme used is the Ubuntu default Ambiance GTK theme.

The expected behaviour would be that the arrow simply turns all white and stays clearly visible. That is also the correct behaviour in current Ubuntu 14.10, no problem there.

Possibly of interest might be this similar bug report against Numix GTK theme, in this case relating to Ubuntu 14.10: https://github.com/shimmerproject/Numix/issues/197

Attached is an overview with three screenshots, the problem with the dropdown arrow is pointed to.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: light-themes 14.04+15.04.20150212-0ubuntu1
ProcVersionSignature: Ubuntu 3.18.0-13.14-generic 3.18.5
Uname: Linux 3.18.0-13-generic x86_64
ApportVersion: 2.16.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Feb 28 15:11:34 2015
InstallationDate: Installed on 2015-02-27 (0 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150227)
PackageArchitecture: all
SourcePackage: ubuntu-themes
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 15.04 (vivid) reached end-of-life on February 4, 2016.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-themes (Ubuntu) because there has been no activity for 60 days.]