Since upgrading to 2.176.3, my previous node script to trigger a Jenkins job remotely has stopped working, I now get an error 403: No valid crumb was included in the request

The steps my script is performing are:

1. HTTP GET on 
   https://username:password@jenkinsurl/crumbIssuer/api/json
2. Parse output to get a crumb (this is still working, I get a crumb)
3. HTTP POST to 
   https://username:password@jenkinsurl/job/blah/buildWithParameters?token=blah&params=blah with header= 'Jenkins-Crumb': crumb from step 1
4. Receives response 403: No valid crumb was included in the request

This started straight after the upgrade.