Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.35
Broken: version: 2.80 (sub 57), branch: blender2.7, commit date: 2019-04-17 19:26, hash: rBb46245470f79
Short description of error
Camera-markers don´t switch camera in some of the blender file´s scenes. Happened randomly when working, had to backtrack 4 files to get a working scene. In 2.79 it should just be to click the "lock cameras and layers" button.
Exact steps for others to reproduce the error
This file has one Scene that´s broken and one where it works.