Hidden delete command found in Java testing tool 'jqwik'... Backlash over attempt to block AI coding

Open-source Java testing tool jqwik sparked controversy after version 1.10.0 included a hidden instruction telling AI agents to delete all jqwik tests and code.

The instruction was paired with code meant to hide the prompt in terminal output and review flows, intensifying prompt-injection concerns.

Developers and the community criticized the move; some AI tools detected the directive but did not follow it.

Maintainer Johannes Link later updated the release notes to make the intent explicit.