I have several single host aliases (One name, One IP).
Then I have a nested alias that groups a few of those aliases.
Such a nested alias added to a rule works.
But, I also have a nested alias that groups a few of the single hosts aliases and the above mentioned nested alias.
Having this multilevel nested alias in a rule does not work for the nested alias in the group.
The nesting is as illustrated below. Similar to what is documented here: https://docs.opnsense.org/manual/aliases.html#nesting
alias A
alias for IP 1
alias for IP 2
alias B
alias for IP 3
alias for IP 4