I did another slightly more sophisticated test.
I opened the “enpass” process (password manager that I currently use) with HxD ( HxD - Freeware Hex Editor) I copied a password that is this “secret_password” then I blocked enpass and as if by magic the password continues to be stored in the memory of the enpass process even when it is closed.
After 10 minutes with enpass locked the password continues to remain in unencrypted memory,
I also tried with keepass and the same thing happened with the database locked.
So be careful if you use enpass and keepass. I will try this test with other password managers as well when I have time.
Serious security problem!
I did the same thing on bitwarden and when I block the database all bitwarden process memory empties and it is not possible to read it even with HxD
This is the objective proof that (with its defects) bitwarden is certainly more secure than enpass and keepass,
After discovering this I will migrate all the passwords to bitwarden that even if it stores the passwords on the cloud does not have this serious problem.