Error on prepare when Orientation is configured

After creating an empty cordova project (cordova create bacon com.bacon Bacon), running cordova platform add android, and adding

<preference name="orientation" value="landscape" />

and then running cordova prepare, the following error is shown among the output.

[ReferenceError: a is not defined]

As a second side effect, bigger than just a logged error, the orientation preference isn't working as expected: the android:screenOrientation isn't set according to what's in the config.xml (it isn't set at all, by the way).

PS: I've checked case sensitivity, and I've checked all possible values [default, landscape, portrait].