The Proton wallet should be more secure by enabling its two additional options:
2) Always require a password to log in to Proton Wallet, even if we are already logged in to another Proton application. Ideally with two-factor authentication.
1) Log out after a few minutes of inactivity.

Context: I just realised that:
1) Even if I don't tick the ‘Remember me’ box, as soon as a session is open on the computer, I can log in to Proton Mail or Proton Wallet or other services without a password on the Vivaldi browser. This is still the case even after deleting cookies.
2) If I am logged into Proton Mail and click on the ‘Proton App’ button, I can access my Proton wallet without entering a password.
Therefore, if I forget to log out of a Proton application, anyone with access to my computer could log into my Proton wallet.

I do not find this secure at all.