Hi,

Have steam beta with proton 3.16-3 Beta
And manjaro XFCE 18 x64

My Config :

inxi -F
System:
  Host: aurelie-pc Kernel: 4.19.0-2-MANJARO x86_64 bits: 64 
  Desktop: Xfce 4.13.2git-UNKNOWN Distro: Manjaro Linux 
Machine:
  Type: Desktop Mobo: MSI model: H110M GAMING (MS-7994) v: 1.0 
  serial: <root required> UEFI: American Megatrends v: 5.B0 date: 06/25/2018 
CPU:
  Topology: Dual Core model: Intel Core i3-6100 bits: 64 type: MT MCP 
  L2 cache: 3072 KiB 
  Speed: 800 MHz min/max: 800/3700 MHz Core speeds (MHz): 1: 800 2: 800 
  3: 800 4: 800 
Graphics:
  Device-1: NVIDIA GP107 [GeForce GTX 1050 Ti] driver: nvidia v: 410.66 
  Display: x11 server: X.Org 1.20.3 driver: nvidia 
  resolution: 1920x1080~60Hz 
  OpenGL: renderer: GeForce GTX 1050 Ti/PCIe/SSE2 v: 4.6.0 NVIDIA 410.66 
Audio:
  Device-1: Intel Sunrise Point-H HD Audio driver: snd_hda_intel 
  Device-2: NVIDIA GP107GL High Definition Audio driver: snd_hda_intel 
  Sound Server: ALSA v: k4.19.0-2-MANJARO 
Network:
  Device-1: Intel Ethernet I219-V driver: e1000e 
  IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full 
  mac: 4c:cc:6a:90:66:7d 
Drives:
  Local Storage: total: 223.57 GiB used: 58.45 GiB (26.1%) 
  ID-1: /dev/sda vendor: Crucial model: CT240BX500SSD1 size: 223.57 GiB 
Partition:
  ID-1: / size: 210.11 GiB used: 58.45 GiB (27.8%) fs: ext4 dev: /dev/sda2 
  ID-2: swap-1 size: 8.80 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda3 
Sensors:
  System Temperatures: cpu: 37.0 C mobo: N/A gpu: nvidia temp: 25 C 
  Fan Speeds (RPM): N/A gpu: nvidia fan: 35% 
Info:
  Processes: 175 Uptime: 21m Memory: 7.75 GiB used: 1.21 GiB (15.6%) 
  Shell: bash inxi: 3.0.27 

The proof :
https://i.imgur.com/mdPUTXB.png

Is not normal...

Cordialy