[Linux] - Saved layouts are loaded incorrectly.

1. What happened

- Saved project layout is not loaded by default.
- Saved layouts when selected are not loaded incorrectly.

2. How we can reproduce it using the example you attached.

- Open Unity 2018.1.0b12 in Unbuntu 16.04 LTS.
- Create a new project
- Create a new scene with a cube
- Move the menus around to create a layout of your liking.
- Save your layout (Dropdown @ top right of screen)
- Save project.
- Restart Unity and load your project
Notice issue >> Saved layout is not loaded by default.

- Navigate to the layout menu and select the layout you created.
Notice issue >> Menu layout loads incorrectly.