Command block summoing with special villager trade bug.

This command (or any command similar using an air block to trade for a sign)

/summon Villager ~ ~-2 ~ {PersistenceRequired: 1,CustomName:Lever Game Champion,CustomNameVisible:1, Attributes:[{Name:generic.movementSpeed,Base:0}],Offers:{Recipes:[ {buy:{id:0},sell:{id:323,Count:1,tag:{display:{Name:”Local Lever Game Champion”,Lore:[“Some day I will beat, the legendry Teep!”]}}}}]}}

Causes what had previously been assumed as a corrupted chunk with the villager disappearing. However, I tried this in a totally new world, and had the same issues with the villager. Is this because of the command its self, or is something else happening.

The previous topic this is biased was resolved, but it turns out it was misdiagnosed. (https://bugs.mojang.com/browse/MC-49690)