'npx ampx sandbox' still doesn't work as described in Quickstart tutorials

[clarktx]

Environment information

System:
  OS: Windows 11 10.0.22621
  CPU: (16) x64 AMD Ryzen 7 7800X3D 8-Core Processor
  Memory: 11.71 GB / 31.16 GB
Binaries:
  Node: 20.12.2 - C:\Program Files\nodejs\node.EXE
  Yarn: undefined - undefined
  npm: 10.5.0 - C:\Program Files\nodejs\npm.CMD
  pnpm: undefined - undefined
NPM Packages:
  @aws-amplify/auth-construct: 1.5.1
  @aws-amplify/backend: 1.13.0
  @aws-amplify/backend-auth: 1.4.2
  @aws-amplify/backend-cli: 1.4.6
  @aws-amplify/backend-data: 1.4.0
  @aws-amplify/backend-deployer: 1.1.13
  @aws-amplify/backend-function: 1.12.0
  @aws-amplify/backend-output-schemas: 1.4.0
  @aws-amplify/backend-output-storage: 1.1.4
  @aws-amplify/backend-secret: 1.1.5
  @aws-amplify/backend-storage: 1.2.4
  @aws-amplify/cli-core: 1.2.1
  @aws-amplify/client-config: 1.5.5
  @aws-amplify/deployed-backend-client: 1.5.0
  @aws-amplify/form-generator: 1.0.3
  @aws-amplify/model-generator: 1.0.12
  @aws-amplify/platform-core: 1.5.1
  @aws-amplify/plugin-types: 1.7.0
  @aws-amplify/sandbox: 1.2.9
  @aws-amplify/schema-generator: 1.2.6
  aws-amplify: 6.12.0
  aws-cdk: 2.174.1
  aws-cdk-lib: 2.174.1
  typescript: 5.7.3

Describe the bug

The instructions in Configure for local development fail to connect a client to the sandbox. The instructions say to use a user with Amplify Backend deploy access, and the command npx ampx sandbox --outputs-format dart --outputs-out-dir lib to trigger the creation of a stack. However, the client never recognizes the bootstrapped environment.

There is a current workaround mentioned in this repo's other "closed" issues that says to use a user with full Admin access and the command
npx aws-cdk@latest bootstrap aws://<my account>/<region>

This does work, however the tutorial should be updated or the root cause of the problem fixed.

Thanks

Reproduction steps

When following the Configure for local development section, we're instructed to create a user with "AmplifyBackendDeployFullAccess" permission. As expected this user cannot bootstrap the environment, so we're directed to use an Admin or Root user to complete the bootstrap process.

After this is done and a new "CDKToolkit" stack has been started, we get to the problem. We run the sandbox command again as instructed:

`PS dev\my_amplify_app>npx ampx sandbox --outputs-format dart --outputs-out-dir lib

The given region has not been bootstrapped. Sign in to console as a Root user or Admin to complete the bootstrap process, then restart the sandbox.`

The stack is not detected.