Hello,
This is not Windows' standard multitasking feature. I think you have some third party software going on here.
Do a clean boot using this instruction: https://support.microsoft.com/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd
Make sure you follow the instruction closely and do NOT disable the Microsoft services.
Then see if you still see the same behavior.