XFCE with Xfwm4 on OMLx Rock and I think XFCE in general have not check seems to have a bug when it comes to steam and drop down menus. You are able to over and click to bring up the drop down menu, but cannot click on any of the options within in. I tried it with Kwin as the default window manager in XFCE and it worked. So it is definitely a Xfwm4 problem, I just do not know how to fix it. I went throug all the window manager settings and could not find the option that would work. I just wanted to let everyone know.
A possible fix would be to switch window manager for xfce to Kwin or or openbox, or something like that.
That should probably be directed to Valve. Granted, they probably only care about the two widely used DE’s. Which means, they only care about the two WM’s.
I seem to have fixed the issue. You have to go to
settings manager > settings editor > go to xfwm4 under channel > uncheck raise on click and check raise on focus…will post screenshots