Bar on bottom when streaming from phone

[Frty&dr]

Hi. I ve got a problem with chromcast 2015 when streaming from BubbleUPnP or other applications. There is a constant grey bar on both tv whrn playing. Dont now is it normal, I guess no but ive bought it yesterday.

 

[quachvannhan]

You can try LocalCast.
There is no grey bar at the bottom.

 

[Frty&dr]

You can try LocalCast.
There is no grey bar at the bottom.

It cant transcode mkv and ive got no audio when streaming using local cast