I think GLM 5.2 might have found this. See Poelstra's response in this github thread:

GitHub

Confidential peg-in transaction · Issue #1325 · ElementsProject/elements

Hi! I've found a confidential peg-in transaction fd36f216be666d43ec861feb756b1c5f48fb54f98bfeed25e5367b05cccc96e8 and I'm wondering why its amount ...

. What if someone created a transaction with an OP_RETURN that has a pedersen commitment that has some big negative value? If it gets included in the balance equation, that can work *only if* the range proof is not attached to that output. See

Liquid Explorer - Blockstream.info

Blockstream Explorer is an open source block explorer providing detailed blockchain data across Bitcoin, Testnet, and Liquid. Supports Tor and trac...

- this is the transaction at which people are saying there's a consensus split. View quoted note →