I'll pick gnome-calculator as an example since it shows stretched in
both Xenial and Yakkety.
The issue seems to be the appstream generator is making stretched
thumbnails and gnome-software / appstream-glib is choosing these over
the original images. For gnome-calculator (which shows the problem in
both Xenial and Yakkety) the dep11 data [1] gives:
>From
source-image:
height: 285
url:
g/gn/gnome-calculator.desktop/849e24a42d3d86f364e068fc3be7f680/screenshots/source/scr-1.png
width: 312
thumbnails:
- height: 702
url:
g/gn/gnome-calculator.desktop/849e24a42d3d86f364e068fc3be7f680/screenshots/1248x702/scr-1.png
width: 1248
- height: 423
url:
g/gn/gnome-calculator.desktop/849e24a42d3d86f364e068fc3be7f680/screenshots/752x423/scr-1.png
width: 752
- height: 351
url:
g/gn/gnome-calculator.desktop/849e24a42d3d86f364e068fc3be7f680/screenshots/624x351/scr-1.png
width: 624
- height: 63
url:
g/gn/gnome-calculator.desktop/849e24a42d3d86f364e068fc3be7f680/screenshots/112x63/scr-1.png
width: 112
The large thumbnails are distorted and should not be used/generated.
[1] /var/lib/apt/lists/archive.ubuntu
.com_ubuntu_dists_yakkety_main_dep11_Components-amd64.yml.gz
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https://bugs.launchpad.net/bugs/1626494
Title:
Some app screenshots wrongly stretched in Ubuntu version of Gnome
Software
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