Removal of unavailable metrics button from UI after cluster update based on cluster version.
I updated cluster from V6.x.x to V7.x.x, and found that (Tickets Available) graph is showing available r/w tickets near 0. It was a little scary at a time but, after talking to support, I got to know (Tickets Available) is no longer supported but same info is available from (Queues) graph.
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