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https://issues.apache.org/jira/browse/NIFI-4324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16142193#comment-16142193
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ASF GitHub Bot commented on NIFI-4324:
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Github user scottyaslan commented on the issue:
https://github.com/apache/nifi/pull/2109
Thanks @mcgilman this has been merged to master.
> UI - Context Menu Issue
> -----------------------
>
> Key: NIFI-4324
> URL: https://issues.apache.org/jira/browse/NIFI-4324
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core UI
> Reporter: Matt Gilman
> Assignee: Matt Gilman
> Fix For: 1.4.0
>
>
> If an item in the context menu is a group-item, the sub menu may not trigger
> when 'mouseenter'-ing the item from outside the context menu. This is most
> noticeable when the first menu item is a group-item. It appears the menu item
> 'mouseenter' event is not triggering. If the cursor is already in the context
> menu (ie when the group-item is second in the list for instance) the event
> triggers as expected.
> Root cause of the issue is that when the context menu is hidden, sub menu's
> are hidden instead of removed. So the sub menu works correctly on the first
> attempt but any subsequent attempts will fail because the sub menu is already
> part of the DOM. Proper removal will allow the sub menu to be created
> correctly.
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