Github user felizbear commented on the issue:
https://github.com/apache/zeppelin/pull/1714
this backend test currently fails
```
- should provide onclick method *** FAILED ***
The code passed to eventually never returned normally. Attempted 1 times
over 516.964883 milliseconds. Last failure message: 0 was not equal to 1.
(AbstractAngularElemTest.scala:64)
```
investingating why
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