Middle-earth™: Shadow of Mordor™ (241930) [linux_vulkan_beta] no launcher whatsoever

[Newbytee]

When running Shadow of Mordor with the linux_vulkan_beta branch in Pressure Vessel not even the Feral Launcher appears. Game appears as being played on Steam for a second or two and then it goes back to being online. No window appears whatsoever.

System info: https://gist.github.com/Newbytee/c4a4142c60e9be6dddbb52ee8c03b4a4