Contents of <issue/> tags are never displayed by gnome-software

Fedora 37 Workstation, gnome-software-43.3-1.fc37.x86_64

See: https://github.com/ibus/ibus-m17n/issues/57

The m17n.appdata.xml file supplied by ibus-m17n contains tags for each release describing which issues have been addressed by the release. But this information is apparently never displayed by gnome-software.

https://www.freedesktop.org/software/appstream/docs/sect-Metadata-Releases.html

describes how the release information in the metainfo files should look like. And I think m17n.appdata.xml does it just as described in the specification:

https://github.com/ibus/ibus-m17n/blob/main/m17n.appdata.xml#L35

So what is going wrong here? Why is this information not displayed?