Your system information

• Steam client version (build number or date): Feb 18 2019 22:09:18
• Distribution (e.g. Ubuntu): ubuntu 18.10
• Opted into Steam client beta?: [No]
• Have you checked for system updates?: [Yes]

Please describe your issue in as much detail as possible:

Steam command line options :
https://developer.valvesoftware.com/wiki/Command_Line_Options

do not return in certain cases where you would expect them to.

for example :

steam -login $STEAMUSERNAME $STEAMPASSWORD -nofriendsui -applaunch 9420 -shutdown

After the game ran and I closed it, I was sitting in front of a terminal expecting it to give me back control.

but it never did. I took a couple extra measures : I added -shutdown though I'm not sure this command can be chained in the same way steamCMD commands can be, the docs aren't very explicit on this.

Steps for reproducing this issue:

1. type steam -applaunch <nonSourceAppId>