im noticed when pressing start game in steam beta version. Game not starting. When you press second time start in steam. Game starting. This is bug for beta version.

Your system information

• Steam client version: steam-runtime-beta-release_2016-06-15
• Distribution (e.g. Ubuntu): Ubuntu 16.04
• Opted into Steam client beta?: [Yes/No] YES
• Have you checked for system updates?: [Yes/No] YES
  my all computer hardware information and NVIDIA test found in:
  https://gist.github.com/lahtis/8935236

Please describe your issue in as much detail as possible:

Start game in Play button. Nothing happened. Press second time in Play button. game starting.
why second time game starting.

Steps for reproducing this issue:

1. Select game
2. Press PLAY game
3. game not start.
4. Press second time PLAY game
5. game start