Balance changes estimated in transaction not accurate for complex instructions

[iseedouble]

Hello, I am creating an application to create an openbook market id. However when signing the transaction with the phamtom wallet, I've noticed that the estimated cost of the transaction is not correct. The costs is supposed to be around 2.8 SOL for rent fees, but I get about 0.004 SOL instead. This error occurs when the transaction has this instruction:

DexInstructions.initializeMarket({ market: market.publicKey, requestQueue: requestQueue.publicKey, eventQueue: eventQueue.publicKey, bids: bids.publicKey, asks: asks.publicKey, baseVault: baseVault.publicKey, quoteVault: quoteVault.publicKey, baseMint, quoteMint, baseLotSize: new BN(baseLotSize), quoteLotSize: new BN(quoteLotSize), feeRateBps, vaultSignerNonce, quoteDustThreshold, programId: dexProgramId, authority: undefined, })

https://github.com/openbook-dex/openbook-ts/blob/d3f05744aa37d5532a0d6ecd6112cc5b7278ed85/packages/openbook/src/instructions.js#L172

If I remove this instruction the costs is well calculated for the other instructions which are some SystemProgram.createAccount instructions

Anyone knows why this is happening?

[adamdelphantom]

@iseedouble Do you have a link where I can attempt to reproduce this?

[iseedouble]

Hello, in the end it wasn't really an issue. The bug only occurs when we were on Devnet. Everything is working well on Mainnet