A production quirk.
My self-hosted Discourse was still showing 3.6.0.beta2 as the most recent release. In the Admin Dashboard, the green smiley face indicated I was on the latest release, but in reality, I was two releases behind.
I performed a manual update and am now on 2025.12.0-latest.
Is there something you can do in the release tool to flag 3.6.0.beta2 as outdated and require an update?