[fixed]Coastline Chimera if activated but not block is sac'd

[Aswan jaguar]

Describe the Bug:
1- If Coastline Chimera 's ability is activated and you don't block with it Coastline Chimera will be destroyed at the end of combat or if activate it after combat it goes to graveyard (probably is sacrificed as I tried to regenerate it but didn't have the chance) at eot(discard phase).
2- Maybe depending on the above bug sometimes even when you activate the ability and use the multiblock creature to block Coastline Chimera still dies although it doesn't suffer lethal damage.It does work correctly sometimes.

Which card did behave improperly ?
Coastline Chimera

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink 2016/01/15: Battle For Zendikar v2,duel

What exactly should be the correct behavior/interaction ?
-1 Coastline Chimera doesn't die if you activate it's ability and you don't block at all or don't use the multiblock creature to block.
-2 Doesn't get destroyed or/and sucrificed if it suffers non-lethal damage
Are any other cards possibly affected by this bug ?
-

[Aswan jaguar]

I don't know if they share code but the same bug happens with
Anurid Swarmsnapper.

[Korath]

Yes, they all share the same code.

I strongly suspect that the cards templated like this - "...can block an additional [number of] creatures this turn" rather than "each combat" - don't work properly with multiple attack phases. That is, activating Coastline Chimera once would let you block two creatures in the first combat, and two more in the second. I can't think of a way to test it, though, since the AI can't multiblock even if the ability is active, and can't attack in extra combat phases.

[Aswan jaguar]

Fixed in commit 7c59365. Affected other 3 cards besides above.
Since additional combats doesn't currently work I can't test the other bug mentioned by Korath.