Just wanted to provide an update, it seems the issue is resolved for me in the latest round of commits.

@olivierlambert I activated the trial and imported my configuration from xo, making sure the perf-alert plugin was enabled/configured. I have not received any hanging tasks in XOA.

@olivierlambert Will do. Plugins are disabled and I'm updating back to master right now. Will report back.

@stormi Follow up on the steps I took to possibly help others that may have similar scenarios.

1. Migrated all VM's off of my Master (Node1) and rebooted, upgraded to 8.3 from ISO still on BIOS mode.
2. Once Node1 was back online, I went ahead and upgraded Node2, and Node3 one at a time. I would just move my current VM's around to the host I wasn't upgrading. Finally had all 3 hosts on 8.3.
3. Started the UEFI transition. I started with Node1 which was the master, but I changed the master to be on Node3. I went ahead and migrated all the VM's off the Node1, shutdown, pull the HDD (So I would have a backup) and put a new HDD in. Changed my boot mode to UEFI and did a fresh install. I removed Node1 from the cluster in XO. Once back online, I went ahead and just added Node1 back into my cluster and let XO do its magic of bringing everything back online.

Only issue I ran into was a POOL_JOINING_HOST_TLS_VERIFICATION_MISMATCH when I attempted to add the Node1 to the cluster. I followed the steps listed here: https://xcp-ng.org/forum/post/63470

Running xe pool-enable-tls-verification and xe host-emergency-reenable-tls-verification on Node3 which was still the master and was then able to get the new server added to the pool.

4. Moved the master back to Node1 and started the process over again on Node2 and 3.