Behaviours cannot correctly alter the Issue Picker Fields JQL

Changing the JQL on the Issue Picker field using a behaviour does not work as expected. 

From the JavaScript side it looks like the new JQL filter gets set but when you click on the issue picker field without putting in any text it will only show issues that match the original JQL for the Issue Picker field.

When you start typing the issue Key it then applies the new filter.

Step 1:

Create the Issue Picker field:

Step 2:

Create the Behaviour:

import com.onresolve.jira.groovy.user.FormField
import org.apache.log4j.Logger
import org.apache.log4j.Level
def log = Logger.getLogger(getClass())
log.setLevel(Level.DEBUG)
 
FormField myIssuePicker = getFieldByName("MattsIssuePicker")
  log.debug("My Issue Picker Field Object = "+myIssuePicker)
 
myIssuePicker.setConfigParam('currentJql', 'project = TP AND issuetype = Bug')

Step 3

Edit and issue with that field:

Type the start of issue key and the new filter can then be seen as working:

So before text is entered it still uses the original JQL hence why you see Tasks Only

project = TP AND issuetype = Task

Then after you type into that field it uses the new filter so you only see Bugs:

project = TP AND issuetype = Bug

Regards

Matthew