Incorrect appstream URLs generated
For example Yakuake has
org.kde.yakuake.desktop as appstream id, so the correct URL would be
However, apps.kde.org provides
appstream://org.kde.yakuake, without the .desktop suffix.
The same is the case for Dolphin, Konsole, and other apps.
Discover can handle those since plasma/discover!313 (merged), but it's still technically incorrect.