Distribution (e.g. Ubuntu): Linux Mint 18.1 Serena
Opted into Steam client beta?: No
Have you checked for system updates?: Yes
Please describe your issue in as much detail as possible:
I've recently noticed an issue with the Linux client of steam on mint 18. When attempting to shut down my system i need to instruct my system twice. It appears that this is occurring due to steam interfering with the shutdown procedure when it closes.
In particular, i have noticed that my system will begin shutting down normally until steam is closed, at which point the shutdown sequence seems to halt. Initiating a shutdown sequence after steam has closed works as expected and the system shuts down without issues.
I have noticed this issue occurring on both my home PC and my work laptop (both run mint 18.1).
Your system information
Steam client version (build number or date):

Distribution (e.g. Ubuntu): Linux Mint 18.1 Serena
Opted into Steam client beta?: No
Have you checked for system updates?: Yes
Please describe your issue in as much detail as possible:
I've recently noticed an issue with the Linux client of steam on mint 18. When attempting to shut down my system i need to instruct my system twice. It appears that this is occurring due to steam interfering with the shutdown procedure when it closes.
In particular, i have noticed that my system will begin shutting down normally until steam is closed, at which point the shutdown sequence seems to halt. Initiating a shutdown sequence after steam has closed works as expected and the system shuts down without issues.
I have noticed this issue occurring on both my home PC and my work laptop (both run mint 18.1).
Full system information for my home PC can be found here:
https://gist.github.com/anonymous/1503f4709b86a368c0049b3da03a2b35
Steps for reproducing this issue: