What are the disadvantages of Storybook?

The disadvantages of Storybook are: additional setup and maintenance overhead, as it requires developers to configure a separate environment for isolated component development. This can add a lot of overhead to projects, especially when dealing with smaller teams or more straightforward applications.
One more disadvantage is that Storybook executes components in isolation from the context of the main application, which can lead to differences in styling or functionality once components are being composed. Maintaining stories for every state a component can be in can be extremely time-consuming as an application grows. Storybook does have some compatibility issues with specific frameworks or tooling and would need extra work in order to seamlessly integrate it.