ID 425510 - Pausing the viewport is causing Black Screen on macOS

Problem summary
Pausing the Viewport results in a Black Screen on macOS.

Customer reported version

Mari_4.6v2

Customer reported platform
windows10

Steps to reproduce

1) Open the Example Head project 

2) Go to Edit>Shortcuts>Toggle Shader Compiling and assign a short cut for it

3) While in the viewport use the short cut to pause shader compiling 

result: Black Screen.

Expected behaviour
It should pause the viewport.

Actual behaviour
It causes Black Screen of Death

Workaround
Unknown.

Reproduced by Manual QA