Train Controller SW doesn't run multiple trains

[cwh35]

Prerequisites

• Using npm
• Using an up-to-date main branch
• Using latest version of devtools. Check the docs for how to update
• Tried solutions mentioned in #400
• For issue in production release, add devtools output of DEBUG_PROD=true npm run build && npm start

Expected Behavior

Current Behavior

Steps to Reproduce

Possible Solution (Not obligatory)

Context

Your Environment

• Node version :
• electron-react-boilerplate version or branch :
• Operating System and version :
• Link to your project :