Github user soralee commented on the issue:
https://github.com/apache/zeppelin/pull/1730
@tae-jun It's great feature! So, I would like to suggest one thing.
Currently, the filter function in Zeppelin homepage doesn't work as
expected and this issue is handled in
[ZEPPELIN-1864](https://issues.apache.org/jira/browse/ZEPPELIN-1864).
But, when using filter function, all icon is disappeared like below.

At this time, I think It would be nice to show some icon next to note or
folder if you don't mind.
What do you think?
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