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Bug found in testnet amm logic raises concerns

Major Flaw Found in Testnet AMM Logic | Users Raise Concerns

By

Michael Chen

Feb 15, 2026, 09:33 PM

Edited By

Aisha Khan

2 minutes estimated to read

Illustration of a broken smart contract symbolizing bugs in testnet AMM logic, with warning signs and digital tokens around it

A significant bug has been discovered in the Automated Market Maker (AMM) logic on the testnet, sparking intense debate among the community. A user reported a payout anomaly after performing a swap, which they claimed should not have resulted in such substantial earnings.

Significant Bug Reported

Two days ago, a testnet user created a liquidity pool composed of 400 Pi and 80,000 APPRWDS. After executing a swap of 500,000 APPRWDS, they oddly received 2,757 Pi, which contradicts expected returns based on the constant product formulaโ€”approximately 345 Pi. The transaction ID linked to this anomaly is 94106039b994c0dc1ba137a354b24f04a5acbd5a2a688236b2a30287f4a27c6d.

The bug has raised eyebrows, with the user stating, "Thereโ€™s something very wrong with the AMM."

User Insights and Reactions

Commentary from users on forums suggests many are concerned about the implications of this glitch. One remarked, "This AMM bug resembles an issue found in another blockchainโ€™s AMM last year, but at least this is happening on a testnet!" Others supported the findings, with a user praising the bug catch.

Interestingly, users are reporting unusual payouts even from smaller pools, prompting questions about the validity of the current AMM logic. Some participants reported earnings soaring from 500 test Pi to 5,500 test Pi in mere days, all while holding 100% of the pool supply.

Whatโ€™s at Stake?

The current situation raises important questions: How will the developers address this? Will the community face broader repercussions if a fix isnโ€™t implemented swiftly? Notable comments highlight the shared skepticism, with users insisting on a transparent resolution.

Key Insights

  • ๐Ÿ’ฐ Users report payout anomalies, with one gaining 3,000+ test Pi rapidly.

  • โš ๏ธ Concerns about potential exploitation of the flawed AMM are growing.

  • ๐ŸŒ "The swap execution itself injected Pi (bug)," says one source.

"I managed to get it to pay out another 2000+ Pi in separate sells in the same minute again" - Affected user

Final Words

This glitch could distort the entire testnet market dynamics. As the community watches closely, the developersโ€™ next steps will be crucial in maintaining trust among people looking to experiment within this blockchain ecosystem.

Stay tuned for updates as this story develops.

What Lies Ahead in Correction Efforts?

Thereโ€™s a strong chance developers will act swiftly to rectify the testnet AMM issues, as failure to do so could undermine user confidence. Experts estimate around an 80% probability that weโ€™ll see a patch released within the next week to prevent potential exploitation of the flawed system. The communityโ€™s feedback will likely drive further updates in the AMM logic, ensuring transparency. If the developers engage openly with the community, it could foster a sense of unity, while continued silence might lead to increased skepticism, possibly deterring participation in future tests.

A Lesson from Unlikely History

This situation draws a surprising parallel to the early days of online gaming, where a critical bug in a popular multiplayer game allowed players to exploit flaws for extraordinary gains. Initially met with excitement, this exploitation led to a chaotic environment, forcing developers to change the game mechanics entirely. Just as that digital landscape had to balance player trust with gameplay integrity, the AMM community now faces a similar crossroads, needing to forge clear paths forward while cultivating trust among its participants.