Bug in latest snapshot with armor stands

Hello, I was loading up the latest snapshots to see if I could generate items with armor stands, and I found a problem. I used a command that would summon an armor stand, with no baseplate, at a 45 degree angle, including arms, with a head and a block in their hands. I was finishing it up but when I wanted to put a lore for the block in the armor stands hand, it would cause an error. (I was adding a lore and name because they both had 100% drop chances) I could only type in 1 word for the lore, instead of multiple. Here is the command that wont work:

/summon armor_stand ~ ~1 ~ {CustomName:"Test Subject",CustomNameVisible:1,ShowArms:1,NoBasePlate:1,Rotation:[45f,0.0f],ArmorItems:[{},{},{},{id:skull,Damage:3,Count:1b,tag:{display:{Name:"Skull"},SkullOwner:MHF_Exclamation}}],HandItems:[{id:redstone_block,Count:1b,tag:{display:{Name:"Look At The Lore ->",Lore:[Only one word here]}}},{}],ArmorDropChances:[0.085F,0.085F,1.0F,2.0F],HandDropChances:[1.0F,0.085F]}

But when I remove the lore for the redstone block the command works:

/summon armor_stand ~ ~1 ~ {CustomName:"Test Subject",CustomNameVisible:1,ShowArms:1,NoBasePlate:1,Rotation:[45f,0.0f],ArmorItems:[{},{},{},{id:skull,Damage:3,Count:1b,tag:{display:{Name:"Skull"},SkullOwner:MHF_Exclamation}}],HandItems:[{id:redstone_block,Count:1b,tag:{display:{Name:"Look At The Lore ->",Lore:[OnlyOneWordHere]}}},{}],ArmorDropChances:[0.085F,0.085F,1.0F,2.0F],HandDropChances:[1.0F,0.085F]}

I am pointing this out so it isnt broken in 1.12

Edit: Forgot to point out what it said when I tried it in a command block:

[10:07:59] Data tag parsing failed: Expected ']' but got 'o' at: ...Look At The Lore ->",Lore:[Only o<--[HERE]