Github user Leemoonsoo commented on the issue:
https://github.com/apache/zeppelin/pull/1145
Another behavior change i found from this PR is,
When no interpreter is binded to a notebook, (e.g. incase of
conf/interpreter.json is removed)
When user open a notebook, Zeppelin automatically open interpreter binding
menu and suggest default set of selections.
Previously, default set of selections were, a interpreter setting from each
interpreter groups.
For example, if there are interpreter setting `spark, spark2, md, sh`,
suggested selection will be `spark, md, sh`.

This PR suggest the first interpreter setting only. `spark` in the same
situation.

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