When using Firewall in an enchantment slot and the Hydra with “Summoned Hydra” skill (applies burning) it does not trigger the Firewall Enchantment at all.
Either the Firewall Enchantment tooltip is wrong and should read “burning applied by you and not your conjurations” or it simply is not working.
Tested this as well with a 2x Hydra with the Summoned Hydra. They never proc the firewall.
Build breaking bug if you ask me, especially since 2x Hydra’s pelting enemies should be a solid strategy to get some of these firewall procs going in addition to casting a bunch of firewalls in packs as well… so lame.
I see people raising this concern back in March on here and Reddit and it’s still not been flagged.