Comment 2 for bug 1921658

@ack

yeah,

pexpect should return only result of command but in this case ( maas 2.8.4 with python 3.6 ( bionic )) it returns from in the middle of command
e.g <3ef-46ca-87c8-19171950592f --pool maas_guest_lvm_vg

you can check reproducer and can see this symptom easily