"Close" and "Delete" popups show "open changesets" even though they are merged

Created by: mrnugget

Extracted from https://gist.github.com/unknwon/b7c80d23e6b2a624e50e4073454959e0

While running another campaign, I notice the "close" panel doesn't get updated without a page refresh:

All PRs are merged but it says "open"