[Screen Going black after exiting full screen mode]

I have the same issue.

[Black Screen after clicking fullscreen mode in setting]

I have the same problem. On latest public version of Windows 10 and latest RCT2. I own RCT2 through Steam and have full screen turned on. 
]Processor    AMD Ryzen 7 3750H with Radeon Vega Mobile Gfx     2.30 GHz
Installed RAM    16.0 GB (13.9 GB usable)
System type    64-bit operating system, x64-based processor
 

Latest public version of OpenRCT2.