Plugin only partially shown in fullscreen with multiple monitors

If you have the problem that only a part of the plugin is shown in fullscreen mode, like on this screenshot https://launchpadlibrarian.net/161466574/pipelight-fullscreen.png , you most probably do not have the 32 bit (!) version of libXinerama.so.1 installed. Without this library Wine is not able to recognize multiple monitors and will therefore treat the whole desktop as a single monitor which leads to wrong calculations when opening a fullscreen window.

Wine does not directly link against this library, but instead loads the library on demand and therefore some distributions treat this library only as a recommendation and not as a dependency. This makes it possible that you installed Wine without installing this library. On debian/ubuntu/linux mint based distributions you can install the needed library with

sudo apt-get install libxinerama1:i386