The editor-only pixel-art tuner self-spawned via [RuntimeInitializeOnLoadMethod] +
DontDestroyOnLoad into EVERY scene, not just DevSandbox, and its OnGUI draws the
toggle button on every IMGUI pass BEFORE the `!_open` early-out. IMGUI dispatches
at least Layout+Repaint per frame, so it allocated continuously during normal
gameplay — it is a MonoBehaviour, so an ECS system-toggle sweep never touched it,
and it dominated this session's allocation profiling until it was found.
Now gated behind an EditorPrefs opt-in with a checked menu toggle, mirroring
`ProjectM/Boot Into Menu (Editor)`. Off by default.
Separately: because the object carries HideFlags.DontSave it SURVIVES play-mode
exit while the static _instance does not, so the old code leaked one instance per
domain reload — two live strays were found and cleared in the editor.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
kronic
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