Firmware v3.8 - Plane dont use rangefinder during landing process

Because of the alt problem Im trying arduplane firmware v3.8-rc4 now, till now the alt seems fine, but while landing the plane didnt use rangefinder altitude, and landing accuracy is so bad.

Here is the log:
https://drive.google.com/file/d/0B6nj4A2GqXmWdFc2NTVRVWk4SjA/view

has this been corrected in RC 5?

@pompecukor Not sure yet