When you add a new item in Enpass, the selected vault is the main vault of Enpass.

What would be more intuitive is to select the appropriate vault:

• All vaults -> Select default vault in the list
• Specific vault -> Select specifc vault in the list

Would prevent errors, especially when you can't move a password from one vault to another afterward.

I don't quite understand what the problem is? Every time I create a new item (no matter on which platform) right at the beginning I can choose the vault where I'd like to store it. By default there is your main vault as a preferable storage, but you can change it in the settings.