Website passwords in keychains deleted after Catalina update

It gets worse... Catalina will delete the web passwords from your keychain more than once. It happened to me on the initial upgrade, and it continues to happen when I reboot, wake from sleep, and sometimes just idling. It will purge any Internet keychain entry on a regular basis.

The problem affects one file: ~/Library/Keychains/login.keychain-db. This is where the passwords are being wiped out. If you do not keep a backup of this file on disc or in the cloud, then there is no recovery and Catalina will regularly continue to delete your Internet passwords.

A temporary fix is to make a copy of this file every time you update it, for use as a replacement the next time you lose your passwords. It is also entirely possible that enabling iCloud keychains will make this problem go away. I do not put my passwords in the cloud so I have not tested this. Catalina just might assume everyone wants to use iCloud.

Possible causes that come to mind:

• Catalina just doesn't like Internet passwords in the keychain - there's not even an Internet category filter anymore

• Safari, where I have no passwords stored, is thinking that's the correct state so passwords in the keychain need to be removed

• iCloud, where I have no passwords stored, is thinking that's the correct state so passwords in the keychain need to be removed, and it's ignoring the fact that I do not have iCloud keychains enabled and editing the database anyway

Keychain Access used to have a First Aid option to repair its data. Anyone know what happened to that feature? May not be relevant since they changed storage formats from .keychain to .keychain-db.

Apple support pretty much just told me you need to restore from a backup or use iCloud. I won't get into the incompatibility between Catalina and Mojave when it comes to Time Machine... But they did acknowledge that the developers need to look at this at least. Apple, I hope you can find the solution! Keychain has worked amazingly well for me for years, I'd rather it continued to work than switch to a third party. Without being forced to use iCloud, please.

Catalina 10.15.3 has just been released but does not fix the bug.

Despite many discussions on the forums dealing with this problem, Apple remains deaf.

I contacted Apple support and opened a complaint file;

I contacted Apple product security and provided the information;

I contacted Apple Feedback assistant and opened a comment;

What else can i do?

I have received no response from Apple, not even information that the problem is under investigation. It is serious, very serious, not to be able to guarantee the security of personal data and worse to seem to ignore it!

APPLE DO YOU HEAR THIS?