I am running Fedora Kinoite 36, and cockpit-ostree version 189.
When I run an rpm-ostree upgrade via the terminal (outputs from terminal attached) and then view the "Software Updates" section in Cockpit, I see what looks like two pending deployments:

Clicking on the "Packages" tab on the bottom pending deployment seems to list the correct packages that were modified:

Clicking on the "Packages" tab on the top pending deployment, however, lists incorrect additions/removals/updates:

I am experiencing this on two different machines; both running Fedora Kinoite.
rpm-ostree-upgrade.txt
rpm-ostree-status.txt