Bug: UI showing incorrect earned amount

[karelianpie]

Initially reported by @defiglenn in https://github.com/yearn/yearn.fi/issues/199

What happened 🆘

Yearn.finance showing incorrect 'earned' amount for vault token holders.

• Balance is sometimes showing 0 amount when user had previously seen earned amount above 0. https://discord.com/channels/734804446353031319/734811808401063966/1109253025958211675
• Balance sometimes showing negative amount after user deposits
• https://discord.com/channels/734804446353031319/734811808401063966/1109253025958211675
• Balance not increasing after a harvest has taken place. A user reported to me on telegram how, despite a harvest completing 10 hours ago where the share price on yearn.vision had increased, his earned amount was unchanged.

To Reproduce 🔂

Steps to reproduce the behavior: View earned amount in vault, see how it changes after a deposit and harvest

More 🔎

[visitskyworld]

@0xBasically can I take this one?

[0xBasically]

@0xBasically can I take this one?

sure

[karelianpie]

@Majorfi I reckon this is coming from yDaemon

[Majorfi]

Earned amount is an estimate coming from the Subgraph, then doing some FIFO computation to try to determine the expected amount earned. Nothing is calculated on the FE yes