Pretty Major Bug with these 2 cards...

After equipping my Ghostblade Eidolon with Angelic Destiny, I had noticed that the Eidolon was still 1/1, but shrugged it off and attacked figuring it was probably a visual glitch.
After the creature tapped, it said it was a 5/5 (as it should have been), but the Opponent blocked it with a 3/3, non-flying creature.
My Eidolon did 1 damage to the creature as First Strike damage, and that was it... No regular damage.
Weirder still, when the AI's creature did its regular damage, it didn't kill my creature, but the Angelic Destiny went back to my hand... ???
I've been playing around it, trying to see if I can get this to work with any of the other enchantment creatures, but so far they seem fine, but I have deliberately reproduced this bug 3 times to make sure it wasn't just a fluke.
After the creature tapped, it said it was a 5/5 (as it should have been), but the Opponent blocked it with a 3/3, non-flying creature.
My Eidolon did 1 damage to the creature as First Strike damage, and that was it... No regular damage.
Weirder still, when the AI's creature did its regular damage, it didn't kill my creature, but the Angelic Destiny went back to my hand... ???
I've been playing around it, trying to see if I can get this to work with any of the other enchantment creatures, but so far they seem fine, but I have deliberately reproduced this bug 3 times to make sure it wasn't just a fluke.