Limitations for Lookup Manager post-functions
Problem
Lookup Manager post-functions are processed asynchronously, this means that the changes made by post-functions are not always visible just after the post-function execution.
This problem is tracked by Atlassian at: ACJIRA-1098: The result of Connect post-functions is not visible at the end of the transitionGathering Impact
Workaround
To refresh the page to see the changes done by the post-function.