Register new properties and signals don't update the engine if it's already opened.

I don't know if it's a bug, but after I recompile the lib .so on Linux and change de window do the Godot Engine, that was previously opened, it doesn't recognize the new properties and signals recently built.
Just after I close and reopen the Engine that it recognizes those new properties and signals, I suppose it must behave the same way for new methods.

Is it how it suppose to work?