Steps to reproduce the problem:
1. Use same login in both you tube application 
2. Connect to google chrome cast 
3. If you are playing a vedio on your tv its start other vedio with out informing 

What is the expected behavior?
Always 

What went wrong?
U need to have login connected with google cast bec when at home if any peron connected on same wifi network accidentally conenct to play on tv the present person who is watching stop without notice and the vedio pressed by other perons starts up

Did this work before? N/A 

Chrome version: 58.0.3029.83  Channel: stable
OS Version: 
Flash Version: 

U can email or call so that I can explain u what's the bug in breif when multiple user connect on same wifi use Google cronme cast