FEP Validator & Auto Fixer

FEP Validator & Auto Fixer is a professional-grade editor utility that solves one of the most common bugs introduced by Unity's Configurable Enter Play Mode feature. When Domain Reload is disabled to speed up "Enter Play Mode" times, Unity skips its standard C# memory cleanup. Static variables, static collections, and static events silently retain their values between play sessions causing "ghost" data, duplicate event subscriptions, and NullReferenceExceptions that are hard to trace back to their real cause. This package scans your entire project (including Assembly Definition-based scripts), flags every risky static field, and automatically injects the code needed to reset them safely on every Play session without you having to manually track down and patch each one by hand. Whether you're working on a small prototype or a large enterprise-scale project with thousands of scripts, FEP Validator gives you a clear, actionable dashboard of every static-variable risk in your codebase, plus a one-click fix for all of them at once. Fully compatible with Unity 2021.3 LTS through Unity 6, and works across Built-in, URP, and HDRP render pipelines.