Hey,

When I'm launching vanilla by holding right, the debug mode stays active even in vanilla. Is this okay and if no how can i deactivate it?

That is completely fine. Only thing disallowed is using a feature of it. Having it enabled is fine as long as no feature is getting used during the run like the debug console or debug map.

If you want to disabled it, you can set the "Debug Mode" option in Everest to "Everest" (or "Off)