Bahamet fight Heal Sponge node bugged?

So I’m doing Guillotine Challenge on Bahamet with Heal Sponge node and the node says that he “CANNOT recover his health ABOVE the phase threshold.”
Am I misunderstanding? When G2099 Regen activates, he heals ABOVE phase 4 into Phase 3. Granted, phase 4 remains but if I die, he goes into phase 3.
Am I misunderstanding? When G2099 Regen activates, he heals ABOVE phase 4 into Phase 3. Granted, phase 4 remains but if I die, he goes into phase 3.
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So yes, BAHAMET can go back from phase 4 to phase 3 if he regenerates, no matter what the description says.
I don't think they are going to fix it now though.
I don't see any response from Kabam on previous threads, either: https://forums.playcontestofchampions.com/en/discussion/334337/bahamut-is-bugged-on-heal-sponge-path#latest