Advancement conditions with nbt data do not work correctly for inventory_changed

I have created a file at <world_save>/data/advancements/zed/challenges/root.json with the following contents:

{
    "display": {
        "icon": {
            "item": "minecraft:redstone_block"
        },
        "title": "Zedcraft",
        "background": "minecraft:textures/gui/advancements/backgrounds/nether.png",
        "description": "Custom goals and challenges for Zedcraft"
    },
    "criteria": {
        "create_zedcraft_advancement_book": {
            "trigger": "minecraft:inventory_changed",
            "conditions": {
                "items": [
                    {
                        "item": "minecraft:book",
                        "nbt": "{display:{Name:\"Zedcraft challenges\"}}"
                    }
                ]
            }
        }
    }
}

I am unable to get the advancement to trigger using either a Book named Zedcraft challenges in an anvil or by using the following give command:

/give @s minecraft:book 1 0 {display:{Name:"Zedcraft challenges"}}

However if I remove the NBT condition it works correctly for any book, and I know that Minecraft is recognising the NBT string as if I make the syntax invalid in the JSON file, I get an exception in the logs. I tried it with written_ book as well with a 'title' condition as well as with various different title/name strings. This could be true for other NBT related conditions/triggers as well, but I have only tested it on inventory_changed.