Mouse right click restarts File Explorer in Windows 10
A poorly coded Context Menu handler might cause this symptom. I studied this item and found extension called CppShellExtContextMenuHandler.FileContextMenuExt Class, which is related to Context Menu.
This is part of Anti Virus Shell Extension Plug-in. Product is F-Secure Computer Security GUI.
When I disable following dll:
C:\Program Files (x86)\Saunalahti\apps\ComputerSecurity\FSGUI\FsShellExtension64.dll
the problem disappears. It might be a good idea to update this dll.