The ednpoint /pallets/assets/{assetId}/asset-info returns information about the asset ignoring the at param.
These three return the same information when connecting to PAH:
pallets/assets/1337/asset-info?at=1111275
pallets/assets/1337/asset-info?at=1111000
pallets/assets/1337/asset-info?at=50
Despite the asset not existing at any of those blocks.
When querying the asset info using PJS/APPS, it correctly returns none since it did not exist at those points.