Tooltip formatter #5922

PaulDalek opened this Issue Nov 2, 2016 · 0 comments


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Using tooltip formatter() function without returning anything (e.g. console.log(this)) results in ‘Uncaught TypeError: Cannot read property 'join' of undefined(…)’ error. The latest version where error does not occur is v4.2.7.

Live demo with steps to reproduce - latest version (not working) - 4.2.7 version (working)

@jon-a-nygaard jon-a-nygaard added the Bug label Nov 2, 2016
@jon-a-nygaard jon-a-nygaard self-assigned this Nov 2, 2016
@jon-a-nygaard jon-a-nygaard added this to the 5.0.3 milestone Nov 3, 2016
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