When using the Power Apps Maker Portal to manage solutions for D365 entities, I have noticed entire entities added to the solution when only a single component should be added.
A common scenario is when an entity such as Contacts is a part of a solution and a relationship is added into the solution that references another entity, e.g. Contacts:Accounts N:1. When this is done, the 1:N Accounts:Contacts reltionship should be added to the solution which adds the Accounts entity. Desired behavior is that the Accounts entity is added with only the one component. However, the Power Apps Maker Portal will add the Accounts entity with all components. This is very undesired and can be quite dangerous when importing the solution to another environment.