Here's a patch that fixes the issue.
** Patch added: "PlayOnLinux.desktop.patch"
https://bugs.launchpad.net/ubuntu/+source/playonlinux/+bug/1574805/+attachment/4743708/+files/PlayOnLinux.desktop.patch
--
You received this bug notification because you are a member of
Debian/Ubuntu Games Team,
** No longer affects: gnome-software (Ubuntu)
** Tags added: desktop-file patch
--
You received this bug notification because you are a member of
Debian/Ubuntu Games Team, which is subscribed to playonlinux in Ubuntu.
https://bugs.launchpad.net/bugs/1574805
Title:
Gnome Software catalog entry