Memory usage metrics in Couchbase web console servers tab

I am not able to understand the memory usage shown in servers tab.
I have a 3 node cluster (5.0.1 community edition).
Data service memory quota - 2gb
Index quota - 4 gb
Now, if you see the screen shot, Data service ram quota is shown as 2 GB correctly on each node. However, Memory usage blue bar is misleading.

  1. Total of used+remaining > 2 GB. Shouldn’t this be 2 GB exactly?
  2. Does this memory bar also includes index memory quota and search quota? If no, where can i see its usage.