Experiencing odd behavior only in my Windows 10 Guest. When I click the start menu, no keyboard output goes to the VM. I can still click on applications with the mouse. I've also seen this in the VPN creation screen.
I have a Windows 7 VM and have not had this happen.
I have the latest version of VirtualBox and Extensions. I've also tried switching to full screen mode and enabling/disabling Auto Capture Keyboard.