Nexus Clash

You have 1 Foo Lion summoned and have rejuvenated 1 to above the starting AP and/or MP, and the other Foo Lion dead.

If you Summon the Foo Lions, the existing one is reset to starting AP/MP/HP and loses any excess AP/MP. It seems like a bug. To me, I think one of the following should happen to the existing Foo Lion:

1. Left alone when the missing one is summoned
2. Rejuvenated when the missing one is summoned
3. Forcibly dismissed and a brand new one summoned as you can only summon a pair at once

The intent is your option #2 - when you summon Foo Lions with one Lion out, the existing one is supposed to be rejuvenated. Unfortunately for some cases like this, that runs off some stripped-down rejuvenation code that resets AP/MP/HP to max rather than the higher of max or whatever it already has.

Setting it to the higher of the two values is really, really easy to change codewise. So that'll be the new state of things in the next patch.