I just installed Love 0.11.0 for Windows 64 bits with the zipped file and now this simple code :
io.stdout:setvbuf("no") function love.draw() love.graphics.print('Hello World!', 400, 300) end
Work as excepted but also show this in the standard input : AL lib: (EE) SetChannelMap: Failed to match front-center channel (2) in channel map
From my memory, previous version of Love2D did not show this message.