Changed password on Figma but still can log-in via Google

I have created my account manually (not via Google), then I log into Figma using Desktop App and successfully changed my password.

I then go to Figma website and log in via Google, it still allows me in (which I don’t want to since I changed my password already), how could this happens? How can I prevent this scenario to happen? I only want to have a manual log-in with password updated only. Any suggestions?