flickering on mouseover in 2.0

[bedenko]

http://jsbin.com/quduji/edit?html,js,output

When doing .update(), data gets loaded, but sometimes not shown. On mouseover i get flickering, and eventually on mouseout data gets displayed.
This is not happening always, so please try toggling between Day/Week/Month until data does not get shown, and afterwards try the mouse-over.

Is this a bug or PEBCAK?

[tannerlinsley]

This a bug. Not sure what's causing it. I think its because there are elements trying to animate from null to not null values. We'll look into this more.

[etimberg]

I have a hunch that the issue is related to the way update works. I think the elements don't have a starting value when they are updated in.

[tannerlinsley]

Yeup. That's it I think.

On Fri, Aug 28, 2015 at 4:29 PM Evert Timberg notifications@github.com
wrote:

I have a hunch that the issue is related to the way update works. I think
the elements don't have a starting value when they are updated in.

—
Reply to this email directly or view it on GitHub
#1381 (comment).

[etimberg]

I think this line might be related, but it's only a hunch. It would trigger accidentally if the value is 0. https://github.com/nnnick/Chart.js/blob/v2.0-dev/src/core/core.element.js#L44

[etimberg]

@bedenko I can't open your fiddle any more for some reason

[bedenko]

Strange....

Well, i made a new copy:
https://jsbin.com/ganuri/edit

[etimberg]

Thanks! I tested against a new build of Chart.js. A lot of the flicker was fixed and was related to #1384. For some reason the 2nd point still flickers when going from 'day' to 'week'. I'll try and get an answer there soon,

[bedenko]

Excellent!

So you will push the commit to v2.0-dev, when you find that last problem?
Or does a "sneak preview" of this fix exist somewhere?

[etimberg]

I will push the fix when I find it. I have an idea where it is, but I'm not 100% sure.

[etimberg]

Fixed in #1653