Your system information

• Steam client version (build number or date): 17/7/17
• Distribution (e.g. Ubuntu): Ubuntu 17.04
• Opted into Steam client beta?: [Yes/No] No
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

The screenshot tool doesn't work anymore after a recent steam update, it only takes one or two screenshots after it stops working per game launched.

Steps for reproducing this issue:

1. Launch a game.
2. Click on F12.
3. Few or none screenshots are taken