We've upgraded our BlueOcean plugins to the latest 1.15.0 and restarted Jenkins.
Afterward, we were unable to access the `activity` tab and some of the builds.
Initially we thought it was a browser issue, but after doing a curl request we noticed it's not working as well:
There are no exception logs in Jenkins which can point to what's causing this.
However I did make a thread dump which I've attached.
I wasn't sure which component this relates to exactly so I've marked `core`.