Custom bag name not working

I created a custom bag with the unlocalized bag name lootbag_Bauble, which looks like this in the Lootbag_BagConfig.cfg:

$STARTBAG:lootbag_Bauble:15
    $ISSECRET:false
    $BAGCOLOR:20|20|20:255|255|255
    $BAGTEXTCOLOR:$WHITE
    $BAGTEXTUNOPENED:$WHITE:Should hold some sort of bauble.
    $BAGTEXTOPENED:$WHITE:How nice!
    $BAGTEXTSHIFT:$WHITE:I hope it's useful!
    $BAGVALUE:-1:-1
    $PASSIVESPAWNWEIGHT:1
    $PLAYERSPAWNWEIGHT:1
    $MOBSPAWNWEIGHT:1
    $BOSSSPAWNWEIGHT:1
    $USEGENERALLOOTSOURCES:false
    $MAXIMUMITEMS:1
    $MINIMUMITEMS:1
    $PREVENTITEMREPEATS:none
    $EXCLUDEENTITIES:false
    $BLACKLISTRECYCLER:true
    $STARTWHITELIST
        toolbelt:belt:0:1:1:1
        toolbelt:pouch:0:1:1:1
        xat:glowing_ingot:0:1:8:2
        xat:glowing_powder:0:1:16:5
        xat:glowing_gem:0:1:1:1
        xat:weightless_stone:0:1:1:1
        xat:inertia_null_stone:0:1:1:1
        xat:greater_inertia_stone:0:1:1:1
        xat:glow_ring:0:1:1:1
        xat:sea_stone:0:1:1:1
        xat:polarized_stone:0:1:1:1
        xat:dragons_eye:0:1:1:1
        xat:fairy_ring:0:1:1:1
        xat:dwarf_ring:0:1:1:1
        xat:wither_ring:0:1:1:1
        xat:poison_stone:0:1:1:1
        xat:ender_tiara:0:1:1:1
        xat:damage_shield:0:1:1:1
        baubles:ring:0:1:1:1
        bountifulbaubles:reforger:0:1:1:1
        bountifulbaubles:modifierbook:0:1:1:1
        bountifulbaubles:ringiron:0:1:1:1
        bountifulbaubles:trinketballoon:0:1:1:1
        bountifulbaubles:shieldcobalt:0:1:1:1
        bountifulbaubles:trinketobsidianskull:0:1:1:1
        bountifulbaubles:shieldobsidian:0:1:1:1
        bountifulbaubles:trinketmagiclenses:0:1:1:1
        bountifulbaubles:trinketapple:0:1:1:1
        bountifulbaubles:trinketvitamins:0:1:1:1
        bountifulbaubles:ringoverclocking:0:1:1:1
        bountifulbaubles:trinketshulkerheart:0:1:1:1
        bountifulbaubles:ringfreeaction:0:1:1:1
        bountifulbaubles:trinketbezoar:0:1:1:1
        bountifulbaubles:enderdragonscale:0:1:1:1
        bountifulbaubles:brokenblackdragonscale:0:1:1:1
        bountifulbaubles:trinketblackdragonscale:0:1:1:1
        bountifulbaubles:trinketmixeddragonscale:0:1:1:1
        bountifulbaubles:trinketankhcharm:0:1:1:1
        bountifulbaubles:shieldankh:0:1:1:1
        bountifulbaubles:ringflywheel:0:1:1:1
        bountifulbaubles:ringflywheeladvanced:0:1:1:1
        bountifulbaubles:magicmirror:0:1:1:1
        bountifulbaubles:potionrecall:0:1:1:1
        bountifulbaubles:wormholemirror:0:1:1:1
        bountifulbaubles:potionwormhole:0:1:1:1
        bountifulbaubles:trinketluckyhorseshoe:0:1:1:1
        bountifulbaubles:amuletsinempty:0:1:1:1
        bountifulbaubles:amuletsingluttony:0:1:1:1
        bountifulbaubles:crowngold:0:1:1:1
        bountifulbaubles:amuletsinpride:0:1:1:1
        bountifulbaubles:amuletsinwrath:0:1:1:1
        bountifulbaubles:trinketbrokenheart:0:1:1:1
        bountifulbaubles:amuletcross:0:1:1:1
        bountifulbaubles:phantomprism:0:1:1:1
        bountifulbaubles:disintegrationtablet:0:1:1:1
        bountifulbaubles:spectralsilt:0:1:1:1
        bountifulbaubles:flaregun:0:1:1:1
        potionfingers:ring:0:1:1:1
        qualitytools:emerald_ring:0:1:1:1
        qualitytools:emerald_amulet:0:1:1:1
    $ENDWHITELIST
$ENDBAG:lootbag_Bauble

and then made the resource pack with the en_US.lang file located in Lootbags lang.zip/assets/lootbags/lang/ which has this single line in it: name.lootbags_lootbag_Bauble.name=Bauble Lootbag

I also have the .mcmeta file in the root directory of Lootbags lang.zip which looks like this:

{
  "pack": {
    "pack_format": 3,
    "description": "Lootbag lang files for custom lootbags"
  }
}

However, in-game it still displays as "name.lootbags_lootbag_Bauble.name"

This is in 1.12.2

I looked at other issues people posted here, but none of them explain exactly what was wrong.

Malorolam / LootBags

Custom bag name not working #217