cinnamon audio windows bug?

[niubboxp]

Hi all, i have 2 monitor and they work well, the main is connected by hdmi and the second one with dp. My desktops is not extended because i use the first one as monitor and the second one for see videos because is a bigger tv. Problems happen when i turn off the main and i turn on the second one, i can switch the output audio and works well, but when i come back and i turn off the bigger one wired with dp, i cant see anymore the 2 output and if i go on audio window he close afte half second and i cant switch back

I dont know if is a cinnamon issue or what, other windows and system work good without this issue, i also tryed with the kernel 4.20 and nothing change

Any suggestion?