5.6.26-74 version from Ubuntu. I unable start new node with non-default innodb_data_home_dir and/or innodb_log_group_home_dir. 
Restore default value (simple remove) innodb_data_home_dir and/or innodb_log_group_home_dir restoring functionality.
Innobackupex really ignore this parameters?
My version is: innobackupex version 2.3.2 Linux (x86_64) (revision id: 306a2e0)
I think, this old bug: 