This cannot be reproduced on any supported platform under normal working conditions, and has not been reported before, neither for version 1.8.5 nor for 1.8.6. This is a machine-specific issue.
Make sure you have the latest version of your graphics driver installed. If updating drivers does not help, I recommend you try after a clean operating system reinstall, preferably a clean Windows 10 installation without any vendor provided utilities, or try on a different machine.