macOS dock does not hide when switching apps to fullscreen

Since updating to the latest version of Safari and macOS Catalina, the dock no longer hides when I switch any of my apps to fullscreen mode. I can only assume it is a bug because it only started happening after installing the latest Safari update and the macOS Catalina 10.15.7.

Has anyone else had this problem and found a fix for the issue?

On a side-note, I have found macOS to be very unreliable and is still, to this day, littered with bugs. Let's hope macOS Big Sur will fix all of these issues and will be a more robust and reliable system!