I see this bug too: If I set "Key to execute a command" to <Super>r, then use <Super>r to start a program, the launcher remains popped out and won't go away until I hit something on the keyboard that activates the launcher (e.g. <Super>a) and hit escape to make the launcher go away.
I tried apw's super-shift-left keystroke. The launcher popped out, the help screen showed up, and then neither would go away.
Clicking in other windows doesn't make the launcher go away.
I see this bug too: If I set "Key to execute a command" to <Super>r, then use <Super>r to start a program, the launcher remains popped out and won't go away until I hit something on the keyboard that activates the launcher (e.g. <Super>a) and hit escape to make the launcher go away.
I tried apw's super-shift-left keystroke. The launcher popped out, the help screen showed up, and then neither would go away.
Clicking in other windows doesn't make the launcher go away.