Github user jtstorck commented on the issue:
https://github.com/apache/nifi/pull/694
After doing some investigation, I saw that the FlowMerger wasn't merging
labels or funnels, it was just picking the first instance of the component from
each node. I added the use of the mergers for labels and funnels to the
FlowMerger and tested on a three-node cluster, and the merging looks good now.
With one node denying the read permissions on labels and funnels, the UI is
correctly disabling them. Ready for review.
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