Issue Summary

When a Forge app is installed and has storage:app in scope and uses Forge Storage, the permissions might not be cached in the same region as the app is installed into. As a result for a short time (maybe about 1 min) the Forge app will throw the error

APIError: Request principal is not authorized to use storage resource 

The permissions will eventually synchronise and the app will start to function correctly.

Steps to Reproduce

1. Create a Forge app that uses storage
2. Install in to a site with `forge install`

Expected Results

The app works correctly.

Actual Results

The below exception is thrown in the Forge logs:

Error: Request principal is not authorized to use storage resource at <anonymous> (webpack://forge/src/index.js:63:13) 

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available.