Workflow assignment changes status of assignee field but Issue Navigator display are different. No activity update

[KP11]

One of our workflows does a copy value from other field. Although it changes the assignee field the value does not show in issue navigator Recently Added query or assignment in activity tab. It displays the old value in the query. The new value is in the record.
Here is the code:
<action id="211" name="Send to Development" view="fieldscreen">
<meta name="jira.description"></meta>
<meta name="jira.fieldscreen.id">10143</meta>
<results>
<unconditional-result old-status="Not Done" status="Done" step="16">
<post-functions>
<function type="class">
<arg name="class.name">com.atlassian.jira.workflow.function.issue.UpdateIssueStatusFunction</arg>
</function>
<function type="class">
<arg name="class.name">com.atlassian.jira.workflow.function.misc.CreateCommentFunction</arg>
</function>
<function type="class">
<arg name="class.name">com.atlassian.jira.workflow.function.issue.GenerateChangeHistoryFunction</arg>
</function>
<function type="class">
<arg name="class.name">com.atlassian.jira.workflow.function.issue.IssueReindexFunction</arg>
</function>
<function type="class">
<arg name="appendValues">no</arg>
<arg name="sourceField">customfield_10180</arg>
<arg name="destinationField">assignee</arg>
<arg name="class.name">com.innovalog.jmwe.plugins.functions.CopyValueFromOtherFieldPostFunction</arg>
<arg name="oldValue">no</arg>
</function>
<function type="class">
<arg name="class.name">com.atlassian.jira.workflow.function.event.FireIssueEventFunction</arg>
<arg name="eventTypeId">3</arg>
</function>
</post-functions>
</unconditional-result>
</results>
</action>

Why does JIRA not reflect the value change in History? The plugin does change the field but Issue Navigator and history are not recognizing the change.
What field does JIRA look at besides customfield_10180

[David _old account_ · Accepted solution]

You must put the CopyValueFromOtherField post-function at the beginning, not the end, of the list.