UI freeze exception to remove problematic legacy action icons

[Stuart Jaggers]

The Yaru team added some icons to the theme for use in legacy GTK2 apps (e.g., document-new, document-export and so on).

These looked good in apps like Inkscape. However, during regression testing, it was found that the icons caused unpredictable behaviour in other GTK2 apps. https://github.com/ubuntu/yaru/issues/2108 includes screenshots.

The only way to fix is this to provide a 100% complete legacy icon set including all sizes, which isn't achievable for 20.04.

So, our PR https://github.com/ubuntu/yaru/pull/2127 has removed the legacy icons from Yaru for now. It would be great to have a feature freeze exception for this. Any existing screenshots shouldn't be affected unless they show third party GTK2 apps on the desktop, and it would be a minor cosmetic difference if there's a difference at all.

If we don't have the freeze exception, some legacy apps will look poor, as you can see from the issue https://github.com/ubuntu/yaru/issues/2108. Apologies for not realising this before the freeze! The benefit is a more consistent and professional visual experience for users who install and use GTK2 apps.

[Gunnar Hjalmarsson (gunnarhj)]

Ok from a docs POV. We don't have any affected screenshots.

[Amr Ibrahim (amribrahim1987)]

This fixes LP: #1869013.

[Iain Lane (laney)]

Sounds ok from ubuntu-release.

[Launchpad Janitor (janitor)]

This bug was fixed in the package yaru-theme - 20.04.5

---------------
yaru-theme (20.04.5) focal; urgency=medium

  [ Carlo Lobrano ]
  * apps/nautilus: fix dim-label in selection and backdrop (LP: #1869141)
  * tweaks: use outline for tabs accessibility
  * gnome-shell/calendar: darken event dot (LP: #1870938)
  * gnome-shell/calendar: do not change color of day with events
  * shell/switcher-popup: improve contrast of highlighted app

  [ ubuntujaggers ]
  * Updating symbols for Tweaks and Configurator
  * Remove new legacy icons and include some from Humanity (LP: #1870925)
  * Adding symbols for system-reboot and system-log-out (LP: #1868385)
  * Adding missing symlinks for extensions app (Fixes: #2096)
  * suggested (more yaru-style) icon for extensions
  * adding dialog-warning and symlinks (Fixes: #2103)

 -- Carlo Lobrano <email address hidden> Tue, 14 Apr 2020 17:45:05 +0200