[Bug] Hiding and showing the body doesn't work properly

[Igcorreia]

I was testing the property panel, and I disabled and then enabled the body. Now the body lives below Grammarly or other extensions.

I think should not be possible to disable unless we want the body to be injected by javascript or when it is the body we prepend instead of appending.

[kof]

Oh damn, body shouldn't be hidable cc @TrySound