If you try to build watch towers or hunter lodges near to a wolf den, builders always try to destroy it. If I call in the army to protect the builders both - army and builders - will start an attack every now and then. This strange behaviour not only results in unwanted destruction of a resource (wolf den) but also in building not being completed ever. It’s also questionable why unarmed builders think they can fight against 4 wolfes. That’s suicide.
As this is not a bug I suggest more player control and reduced aggro.
If needed I can add a video showing the problems.