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Weird horizontal lines show up after zoom-in on a boosted column chart #7716

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alirezameftahi71 opened this Issue Jan 23, 2018 · 5 comments

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@alirezameftahi71

alirezameftahi71 commented Jan 23, 2018

Scenario

We have a column chart with totally 40000 data in 4 series. But sometimes when we zoom in, we see a some random horizontal lines which are not supposed to be there.
See we zoom in the highlighted area of the chart like shown below:
screenshot 294

Expected behaviour

What we expect is to zoom-in and not see any random horizontal lines on the chart.

Actual behaviour

But this is what we get:
screenshot 295

Live demo

Check the jsfiddle link below:
https://jsfiddle.net/alinux7/qbd2vq0j/

Product version

Highcharts 6.0.4

Affected browser(s)

Tested on:
Firefox, Chrome

@KacperMadej

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KacperMadej commented Jan 23, 2018

Hi @alirezameftahi71

Thank you for reporting about the problem.

After second zoom the lines are not visible - at least for me after testing this.

Internal note: not fixed in any (1, 2) currently opened boost bugfix branches

@cvasseng

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cvasseng commented Jan 30, 2018

A fix has been pushed for this, and is pending merging.

Preview of the fix: https://jsfiddle.net/vhLf5087/

@cvasseng

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cvasseng commented Feb 2, 2018

Fixed in 6.0.5.

@cvasseng cvasseng closed this Feb 2, 2018

@alirezameftahi71

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alirezameftahi71 commented Feb 3, 2018

Thank you @cvasseng . But there seems to be a problem.
When I use the gitHub link in the jsFiddle, the issue IS fixed. But when I use the CDN, the lines still exist.
I opened the CDN link and at the top it says it's the version 6.0.5.
Fixed with github version of boost.js : https://jsfiddle.net/vhLf5087/
NOT Fixed in 6.0.5 release of boost.js: https://jsfiddle.net/alinux7/qbd2vq0j/

@cvasseng

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cvasseng commented Feb 5, 2018

We had an issue with preparing the release, resulting in this particular fix not making it into 6.0.5.

There will be a maintenance release very soon that addresses this as well as a couple of regressions.

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