In reply to:

Another exception to this is with the ter- form, which has to use oleh for the agent.


Yes, the people I asked said Baju saya terbawa oleh adik saya and Baju saya terbawa adik saya (My little brother/sister took my shirt by mistake) are both acceptable, but the form without oleh is more colloquial.

Bingley



Bingley