Antivirus For Mac must be changing my login credentials for a site

Out of nowhere, on my Mac, when I have Antivirus for Mac on, when I log into my Fidelity.com account (on any browser), it gives me an invalid password user name or password error. When not on, I can log in fine. The product must be altering my password on input. And when I quit AntiVirusforMac in my dock, it still doesn't do it. I have to reboot in safe mode and then log in works. When I start up AntivirusforMac, it stops working.

And it only does it on one computer. On another, also with Bitdefender, it does not do this.

Mac Catalina

Bitdefender AntivirusforMac Version 8.1.6.3

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