**[Full release notes](https://github.com/galacticcouncil/HydraDX-node/releases/tag/v15.1.2)** 

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This release fixes a misconfiguration in which the HubAssetImbalance *becomes more negative* from non-LRNA trades instead of *becoming less negative* (moving towards 0). It will also reset the HubAssetImbalance to 0.

0.05% of every trade is paid in LRNA as a **Protocol Fee** - in the design, when the HubAssetImbalance is <0, this fee is burned in order to slowly bring the HubAssetImbalance back to 0.

In the current implementation, the Protocol Fee is actually moving the HubAssetImbalance further from 0 - as a result, the HubAssetImbalance would never move towards 0 and the protocol would eventually burn too much LRNA.

**As with [Referendum #20](https://hydradx.subsquare.io/democracy/referendum/20); please note that adjusting the parameters of the LRNA imbalance mechanism and resetting the HubAssetImbalance will not have any negative impact on past trades or provided liquidity.**

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We found this issue thanks to the help of community member **amphibiousParakeet**, whose relentless pursuit to understand the mechanisms behind the Omnipool first brought this to light. I will be proposing to the rest of the HydraDX Council that we pay a bug bounty under the previously agreed spending framework and would encourage all other curious developers (whether professional or hobbyist) to join us on a bug hunt!

#23 Adjustment to LRNA Imbalance Mechanism (Runtime upgrade to v15.1.2)