Jenkins Multibranch Pipeline fails because it runs

My Jenkins CI/CD build configuration was working and nothing changed until my last pull request and I need to get this working again.

The Multibranch Pipeline is configured to run a jenkinsfile from BitBucket SCM but this is now failing with the following error;

groovy.lang.MissingPropertyException: No such property: pipeline for class: groovy.lang.Binding
    at groovy.lang.Binding.getVariable(Binding.java:63)
    at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:130)

Script Security Plugin is installed and the In-process Script Approval has nothing listed to approve.

Permissive Script Security Plugin is installed and jenkins.xml is modified to include the -Dpermissive-script-security.enabled=true flag for running the .war.

These were implemented and working previously based on How can I disable security checks for Jenkins pipeline builds

As a test I created a Pipeline job which allows the Groovy Sandbox to be enabled and disabled. This was configured with the following cut down version of my pipeline script;

#!groovy

pipeline {

    agent any

    environment {
        VERSION = "${env.MAJOR_VERSION}.${env.MINOR_VERSION}"
        BUILD_LABEL = "MyProject ${env.VERSION} Build #${env.BUILD_NUMBER}"
        BUILD_SOURCESDIRECTORY = "${WORKSPACE}\\src"
    }

    options {
        copyArtifactPermission('MyProject-Deploy')
        buildDiscarder(logRotator(numToKeepStr: '5', artifactNumToKeepStr: '5'))
    }

    parameters {
        string (
            defaultValue: '3',
            description: 'MyProject Major Version',
            name : 'MAJOR_VERSION')
        string (
            defaultValue: '7',
            description: 'MyProject Minor Version',
            name : 'MINOR_VERSION')
    }

    stages {

        stage('Checkout Source') {
            steps {             
                echo('checkout scm')                
            }
        }
    }
}

If I enabled Use Groovy Sandbox and run the job I get the same error;

Running in Durability level: MAX_SURVIVABILITY
[Pipeline] End of Pipeline
groovy.lang.MissingPropertyException: No such property: pipeline for class: groovy.lang.Binding
    at groovy.lang.Binding.getVariable(Binding.java:63)
    at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:130)

If I disable Use Groovy Sandbox the pipeline script completes successfully;

Running in Durability level: MAX_SURVIVABILITY
[Pipeline] node
Running on Jenkins in C:\Jenkins-Workspace\Pipeline-Test
[Pipeline] {
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Checkout Source)
[Pipeline] echo
checkout scm
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS