For context variables provided by an alert, to be used in action parameters, usually the values of the variables are strings or other primitive values. However, they can be objects as well. The metrics alert makes use of this for it's grouping (I believe).

When a customer uses these object-valued variables directly as a mustache "variable", mustache will render these values as the following,

The "Recently used" list of time ranges isn't actually a list. It should be rendered the same way the previous lists are rendered (as a list).

The chaos job introduced in #3706 could be improved to make the process less "predictable":

• Chaos job could immediately scale-up the number of operator replicas
• As described in elastic/cloud-on-k8s#3706 (comment) we could use something like https://github.com/lthibault/jitterbug to make the delay between operations random.