Same issue here with Google Chrome cookies not being deleted.
Windows 10 Pro Version 20H2 for x64-based System
Chrome is up to date
Version 96.0.4664.110 (Official Build) (64-bit)
I log out of everything before shutting it down for the night, disconnect internet, shut off VPN, run CCleaner (usually more than once, yes, I know I'm OCD) and power down. I open it up of the morning, get my VPN and internet going, head to Google to sign in to a blog that I'm part of and there I am, staring back at myself because it's "remembered" me albeit showing that I'm signed out. I have nothing set on my computer to "remember me" and even if I were to screw up and not untick the box, CCleaner has always gotten rid of the cookie anyway. This is getting frustrating.