Chrome Version: 61.0.3163.79
Operating System: e.g., "Windows 7", "Mac OSX 10.6"

URL (if applicable) where the problem occurred: https://hangouts.google.com/call/VjZKbjQOGNdRGPC1iOeFAAkE

Can you reproduce this problem? yes

What steps will reproduce this problem? (or if it's not reproducible, what were you doing just before the problem)?

1. Open hangout. Share screen.
2. Close hangout.
3. Reopen hangout. Will not screen share.

*Please note that issues filed with no information filled in above will be marked as WontFix*

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report_id:0691d46169eaa6ee