Let's say we have Script Field A and B. Getting the value of a Script Field B from Script Field A works fine. Preview Script Field A works the first time, but when trying to preview Script Field A for the second time onwards, it loops and throws StackOverflowError.

Able to reproduce in:

Steps to Reproduce

1. Create two Script Fields:
   Script Field A:

   import com.atlassian.jira.component.ComponentAccessor
   
   def scriptField = ComponentAccessor.customFieldManager.getCustomFieldObjectsByName('case-29165-24201field').first()
   def scriptFieldValue = issue.getCustomFieldValue(scriptField) as String
   
   if(scriptFieldValue){
        scriptFieldValue
   }
   

   Script Field B:

   return "some text"
   

1. On Script Field A configuration screen, type any issue that has both script fields, click "Preview".
2. Click preview again.

Expected Behaviour

It should be working just like the first click of "Preview".

Actual Behaviour

It loops and crashes on StackOverFlow Exception.

Additional Info

• Stack trace: stacktrace.log
• Video Recordings:

Jira 8.22.6 + ScriptRunner 7.12.0	jira8.22.6_sr7.12.0.mov
Jira 9.4.2 + ScriptRunner 7.12.0	jira9.4.2_sr7.12.0.mp4
Jira 9.6.0 + ScriptRunner 7.12.0	jira9.6.0_sr7.12.0.mov