Yeah, affects me as well, thanks for reproducing this amazing bug.
I noticed this item in the latest Steam Beta changelog:
Steam Music Player
- fixed rare case of accidental grabbing focus on startup in 2' UI
The bug is still happening using the same method, in case the changelog item is related to this bug.
Make sure the focus is on the game list. Press up-down to see if the selection is on the list before pressing ENTER to launch the game in step 3.
This happens on Windows too.
Drives me so crazy. ;_; Windows.
I just opened up steam in Arch Linux. A sound player seemingly randomly popped up and I immediately hit the x in the corner. Steam proceeded to play some obnoxious payday 2 themed 12 days of Christmas parody. I closed the steam client but the sound remained, so I typed "killall steam" at the command line and the music stopped.
This happens to me lately a lot. It seems still unfixed. Very annoying.
Oh, yes: windows.
I've had this happen lately on Linux as well. I'm not aware of any UI interaction on Steam itself that would cause this as I do so fairly little. Sometimes pressing Enter will launch the highlighted game, sometimes (rarely but it happens) the music player starts up.
Yup. Happens to me every time my machine takes a nap with steam running in the background.
Upon login, when I enter my password and hit the ENTER key it logs me in an starts the steam player.
I can not reproduce it with the steps described by @salty-horse.
Windows 10 here.
Happening to me now on Windows 10.
I just had this happen to me. :-|
I launched Steam then changed focus to my browser. I pressed Enter as Steam stole focus. Suddenly blaring music from Crimsonland. Clicked the [x] thinking that would stop the music - but no. It then took me a few minutes to figure out how to stop it. :-/
Can confirm, it just happened to me yesterday for the first time in quite a while.
Happening to me with the soundtrack of Baldur's gate 2. Really irritating.
Still happening to me, and closing the window doesn't stop the music.
Just had it happend for me on Windows after tabbing out of a game to check on the download progress of another game and hitting Enter
Just happened to me for XCOM Enemy Unknown/Within. I didn't even know steam had a sound/music player!
Just happened to me while looking at No Man's Sky in my library, it has an update queued but I haven't done it yet. Pressed enter and it just played elevator music instead?
Edit: Selected a different game then back to no man's sky, the elevator music isn't popping up anymore. Am I in a fever dream? What is this "bug" lol?
Ha yeah same, I had a bunch of Steam windows open. I think I had just pasted something in the search box, hit enter and got the music player playing elevator music. Closed the player...but then had to figure out how to get it back because the music of course didn't stop.
Is this just some A/B test to see if people would use the music player if they knew it existed?
Nothing extracted yet.
Using the Sep 22 2014, 20:22:29 build.
Result:
The Steam music player shows up and automatically starts playing music - in my case, it plays the Gone Home soundtrack.
Expected result:
The game should start again. The music player should not start.