[Fixed] Minor bugs. Mantis#4878, Mantis#4877, Mantis#4872, Mantis#4873,
Mantis#4876, Mantis#4876

Change-Id: I99b570a79eb7354818dbcf26069eae18f38adacc
Merge "[Fixed] Minor bugs. Mantis#4878, Mantis#4877, Mantis#4872, Mantis#4873, Mantis#4876, Mantis#4876" into unstable