Ethereum Improvement Proposal 7983 (EIP-7983) lacks backward compatibility, requiring transactions that exceed the new gas limit to be redesigned to comply with the updated protocol rules

Quotes that support claims

It added that the proposed change is not backward compatible but is expected to impact only a small number of users and dApps, as current transactions mostly fall significantly under the proposed limit.

While the proposal isn’t backward-compatible for transactions exceeding the new limit, the authors noted that most existing transactions fall well below the cap, minimizing the impact on users and developers.