Login screen gets bypassed sometimes

The Problem
Sometimes when I wake up my computer from sleep I am taken straight to my desktop. The login screen is completely skipped. This doesn't happen very often only on occasion. I have had this computer for ~4 years and this has occurred for most of that time. I am running Windows 10 and it is up-to-date.

The Desired Result
I want to wake my computer from sleep and always prompt me with the login screen to enter a password.
 
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