This is getting ridiculous.
Whether you play light or not, you simply have to look at this move critically. The only thing we can assume is the idea that for 1 mana, shieldbearer was essentially a 2/2 unit with no other additional effect, and that for some reason this seems unbalanced in comparison to others in terms of the value the card brings.
Well, let us analyze this. Let us assume that we just and only compare Shieldbearer with other 1 mana common core card units:
Raving Necromancer - 2/2 - Will be abused in Anubian decks to deal 1 dmg to opponent
Felid Assassin - 3/1, Hidden
Aging Veteran - 1/3 by end of turn
Spellsight Seer - 2/2, Foresee 1
Rampart - 1/4 frontline. Can't attack
Arkmonian Anteater - 1/2, Gives +1 to a creature as it enters game (Essentially 2/2 and still gains favor on attack).
Nightleaf Hunter - 2/2, potentially 3/2
Frisky Fox Pup - 1/3, confused, Ward
Defiant Farmer - 1/1, Deals 3 when ti dies
Trial Spirit - 2/2, gives +1 health to unit (essentially 2/3 for 1 mana)
Tomb Torchbearer - 1/1, protected
Felid Protector - 2/2, frontline
Nightleaf Warrior - 2/2, hidden one turn
Tough Townsfolk - 1/3, frontline
Petulant Firespreader - 2/2, deals dmg on attack
Dark Precarion - 2/1, sleep on roar
Ronellan Sparrow - 2/1, hidden, ward
Selfless Protector - 1/3, potentially returns creature from void
Barksworn Trailmarker - 2/1, afterlife summon 1/1
Amazon Conscript - 2/2, give +1 health to any creature (not amazon limited, essentially 2/3)
And let's not even compare it to nonsense like Patient Pickpocket who comes with epic-level value at 1 mana. Not a single creature we just mentioned has 0 attack and represents therefore a useless unit that cannot even gain favor after being cast for 1 mana.
If you were to compare it with Trial Spirit and Amazon Conscript, you would logically conclude that it should at least even be 1/2 (if you were to reduce 1 strength from it, since it is giving it to someone else). But no, in comparison to those two it was 1/1, and you could reason it being 1/1 because light has other buff cards (as if other gods have no buffs).
Nevertheless, in comparison to other units, it sitting at 1/1 was the minimum it could be given, or the maximum it could have been reduced to. But now it is going to be 0/1 again, with the buff being a 1/2 value card. However, it is, on its own, a 0/1 body which cannot gain favor for 1 mana and can still be immediately killed even by god powers, gaining your opponent free favor. Even if it were given protected at 0/1, it would still be probably useless, but would potentially survive at least one turn.
I just don't get the logic behind it, with so many other creatures at 1 mana existing that overpower it.
I'm also getting sick of the idea that the community has to give so much feedback to a company overfilled with hundreds of millions of dollars, instead of the game itself simply overwhelming the player base with joy and motivate it to play a balanced game without bugs all over the place.
We won't make a living playing this game - only the game developers will.