Some NFTs are not shown because they lack an attribute.

[Viterbo]

Describe the bug
I made a set of NFTs on my own in testnet but they are not shown in the inventory because they are filtered for not having a specific attribute which is somehow deducible.

The attribute is the supportedInterfaces: string[] and should hold the list of supported interfaces like 'erc721'. In the screenshot below you can see the attribute comes empty from the indexer and therefore not shown on the inventory because the NFTs are being filtered out by supported Interfaces.

Screenshots

[Viterbo]

I reopened this issue because it is not completely fixed. It takes a while for the correct sequence of events to actually set the contracts as supporting the correct list of interfaces. once, it gets cached correctly it never fails again (for that contract).