Submitted by throttle, also found by cccz, cmichel, and leastwood
MasterChef.sol#L86
When adding new token pool for staking in MasterChef contract
All other, already added, pools should be updated but currently they are not.
Instead, only totalPoints is updated. Therefore, old (and not updated) pools will lose its share during the next update.
Therefore, user rewards are not computed correctly (will be always smaller).
Scenario 1:
Scenario 2:
Update all existing pools before adding new pool. Use the massUdpate() function which is already present  but unused.
ryuheimat (Concur) confirmed
Alex the Entreprenerd (judge) commented:
