Created attachment 546591 [details] screenshot steps to reproduce: 1. Load https://addons.allizom.org/en-US/developers/upload/702f79bb06b343cb811f2ca1eb32b5ee 2. Notice the warning 'Potentially unsafe JS in use.' under Extension tests actual behavior: Change 'leat' to 'lead' in "Warning: Changing the value of instantApply can leat to UI problems in the browser."
Fixed in behavior update: https://github.com/mattbasta/amo-validator/commit/55aa9025749b3a63176b4c6618c6fdbe0a81ac12