[1.3.3389] Manhunting megasloth opening doors?

[asanbr]

Playing version 1.3.3389 (steam, Windows)

A wild megasloth on the map became manhunter through a random event, so I locked all my pawns inside rooms and forbid the doors so that no one would wander out. This has always worked with all manhunter animals before.

To my surprise, the manhunting megasloth opened a steel door on its own, to go inside and fight my colonist. Is this supposed to happen? I have never seen it before.