New (Mi2s) external speaker not working on Tango video calls

[Animor]

Hi,

I own a Mi2s.
I have a problem with Tango application: the video call audio is not coming from the external speaker, as it should, but from the regular ear-speaker (like a normal call).

Other mi2s users have the same problem, so I guess it's either device or rom issue.

Can it be fixed?

Thanks in advance!