[confirmed]Firestorm Phoenix: control, copies, counters

[Korath]

Describe the Bug:

1. When a Firestorm Phoenix its owner doesn't control dies, it goes to its owner's graveyard and stays there.
2. When one that is controlled by its owner dies, it correctly gets returned to its owner's hand and correctly can't be cast until that player's next turn. It incorrectly isn't revealed and incorrectly has a blood counter on it. The blood counter is removed at the start of that player's next turn; and it goes away if the card is put onto the battlefield (such as with Elvish Piper), though I haven't tested interactions with Doubling Season or Selesnya Loft Gardens.
3. When something else like a Clone that's copying a Firestorm Phoenix dies (while controlled by its owner, per #1), it correctly gets returned to its owner's hand. It incorrectly can be cast, incorrectly isn't revealed, and incorrectly gets a blood counter. The blood counter stays on it if it's cast or is put onto the battlefield, so it interacts incorrectly with plenty of things (Hex Parasite, Parting Thoughts, Thief of Blood, the proliferate mechanic, etc.)

Which card did behave improperly ?
Firestorm Phoenix

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Dev master head, cde9295.

What exactly should be the correct behavior/interaction ?

1. The controller shouldn't matter.
2. The card should be revealed in its owner's hand. A visible effect card would suffice, so long as it's removed if the card leaves the player's hand.
3. No blood counters, not even if they're reliably removed if the card leaves the player's hand.
4. The effect is independent of the underlying physical card and whatever it is or isn't currently copying.

Are any other cards possibly affected by this bug ?
Not even in unsets.

[Aswan jaguar]

I confirm all bugs. I want to add that it also has a bad interaction with Teferi, Mage of Zhalfir as you can cast Firestorm Phoenix through Teferi, Mage of Zhalfir even if it has the restriction "player can't play it until his next turn". Maybe affects also cards that have flash if they become Firestorm Phoenix somehow. And probably with all cards that let you cast (not put into play which are allowed) a card from your hand tested Maelstrom Archangel.
Edit: the cards I found that allows you to cast from hand without paying mana cost that affect Firestorm Phoenix are: Counterlash, Omniscience, Master of Predicaments, Tamiyo, Field Researcher (tested bugged), Twinning Glass (not in Manalink).