Submitted by 0xliumin
https://github.com/code-423n4/2022-02-hubble/blob/ed1d885d5dbc2eae24e43c3ecbf291a0f5a52765/contracts/InsuranceFund.sol#L56
A user can get a much larger portion of the pool as it recovers from a debt seizure. The intent of the insurance pool seems to be that it could recover from a bad debt event.
It depends on how you want this to work. You could keep track of the total amount ever contributed by users, and use that for calculations. Or just make staking 1 vUSD = 1 share if the pool total is below the total number of shares.
atvanguard (Hubble) disputed and commented:
JasoonS (judge) decreased severity to Medium
