Payout displays eras already paid

[Juanma0x]

• I'm submitting a ...

  • Bug report
  • Feature request
  • Support request
  • Other

• What is the current behavior and expected behavior?

Payout should only display unpaid, pending staking rewards.

• What is the motivation for changing the behavior?

Avoid allowing users to issue extrinsics for reward claims that will fail because the rewards have already been claimed.

• Please tell us about your environment:

https://polkadot.js.org/apps/#/staking/payout

• Version:
  Parity Polkadot v1.13.0
  api v11.1.1
  apps v0.138.2-21

• Environment:

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

• Example:
  Random staker: 15rkXKWsDfwPreMDyTyt3riPGkeyj4fvfGeHhkorhqU7MsWQ

Polkadot-JS UI

Subscan

• Related:
  Network>Staking>Payout displays old Eras that have already been paid #10513
  Fix staking rewards, and update polkadot deps #10552

[TarikGul]

So the issue here is with RANDOM_STAKER? It might have to do with this comment here, and if I had to take a guess might be resolved once we pass 84 eras since the breaking changes with staking.

[Juanma0x]

So the issue here is with RANDOM_STAKER? [...]

I observed the same issue for any nominator. The RANDOM_STAKER is just that, a random nominator I used as an example. You can check the issue using any other nominator.

[...] if I had to take a guess might be resolved once we pass 84 eras since the breaking changes with staking.

I hope it's solved, as you commented. There are quite a few failed transactions (alreadyClaimed) because of it:

• https://polkadot.subscan.io/extrinsic?page=1&time_dimension=date&signed=all&module=utility&call=batch
• https://polkadot.subscan.io/extrinsic?page=1&time_dimension=date&signed=all&module=staking&call=payout_stakers