`Unable to decode storage society.candidates` when there's a vouch in the candidates list

[laurogripa]

• I'm submitting a ...

  • [x] Bug report
  • [ ] Feature request
  • [ ] Support request
  • [ ] Other

• What is the current behavior and expected behavior?

Similarly to #5766, society.candidates is failing after the pallet was updated to V2. It works normally most of the time, but breaks if there's a candidate in the list that was accepted through vouching.

The error can be reproduced in simple steps:

• Use chopsticks and add a candidate with vouch to the storage;
• Connect PolkadotJS apps to chopsticks;
• Call society.candidates in the chain state UI.

2024-02-21 05:27:51        RPC-CORE: queryStorageAt(keys: Vec<StorageKey>, at?: BlockHash): Vec<StorageChangeSet>:: Unable to decode storage society.candidates: entry 7:: createType(PalletSocietyCandidacy):: decodeU8aStruct: failed at 0xd83d00000000000000000000… on kind (index 2/5): {"_enum":{"Deposit":"u128","Vouch":"(AccountId32,u128)"}}:: Unable to create Enum via index 216, in Deposit, Vouch

Environment

• Version: v10.11.2 (latest)

• Environment:

  • [x] Node.js
  • [x] Browser
  • [ ] Other (limited support for other environments)

• Language:

  • [ ] JavaScript
  • [x] TypeScript (5.3.3)
  • [ ] Other