When creating an account or setting up a new app, the user should be prompted with a message explaining the difference between locking and logging out from the vault and all the consequences.
Many users don’t know the difference and there are many messages in this forum which could be avoided thanks to something like this.
It should also be described in an article in the help website.
I think the OP meant consequences of “locking” the vault like the data remains then locally stored, e.g. encrypted by the (non-biometric) unlocking-PIN if you set one.
Here on this help site it is described (though the title is about logging in and unlocking the vault, whereas OP wrote about logging out and locking the vault, but I guess the text is about what OP meant): Understanding unlock vs. log in | Bitwarden Help Center