Operating system: Windows-10-10.0.16299 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 391.24
Broken: version: 2.80 (sub 51), branch: blender2.7, commit date: 2019-03-21 23:13, hash: rB1ae6aaad43ad
Short description of error
I use a separate fullscreen window vor eevee camera view on my 2nd screen. I had some trouble lately with what I see on the screen vs what I would get with ogl-animation capture. Something with sun light radius changing, but I couldn't nail it down. So I tried a simple repro scene and depending whether I am in solid or rendered view in the workwindow, the lighting in the separate render window would change. Not exactly the error I was getting, but pretty sure it is related.
Please see attached video and scenefile for reference.
Exact steps for others to reproduce the error
Open example scene and switch main window between solid and lookdev shading.