Tested on my Zen2 system, no issues.

We will soon publish the security update. Few hours left for community feedback before the release.

Yes, if you removed the master without tell it to transition the master role to another machine, you have to promote manually your current slave if your "old master" isn't there anymore

Hi,

That's weird. do you have the same view in Xen Orchestra? Can you screeshot htop in the Dom0?

A topic for @Andrew I think ^^