Endpoint:
https://us.api.blizzard.com/hearthstone/cards/61884?locale=en_US&gameMode=battlegrounds&access_token=my_token
Response contains empty imageGold:
{
"id": 61884,
...
"battlegrounds": {
"tier": 4,
"hero": false,
"upgradeId": 67728,
"image": "https://d15f34w2p8l1cc.cloudfront.net/hearthstone/2838a6cab914136ec07b596d868bf84ef1d4be283634fce513115a3d76728c64.png",
"imageGold": ""
}
}
While https://playhearthstone.com/ has golden version:
"battlegrounds":
{
"tier": 4,
"hero": false,
"image": "https://d15f34w2p8l1cc.cloudfront.net/hearthstone/59829e31898c5df6af84c8c8994bf5209d4e5783539c471d29fcf36c4449b778.png",
"imageGold": "https://d15f34w2p8l1cc.cloudfront.net/hearthstone/43ff0a65d8149b37bad5199e4b2ee78f2c96d7c4740f690d0430aa561e88f68a.png"
}
playhearthstone com uses:
https://api.blizzard.com/hearthstone/cards?gameMode=battlegrounds&ids=63273%2C67728&pageSize=200&locale=en_US
P.S. (inspected with chrome dev tools)
Expected behavior: first request (from documentation) return golden images.