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Testing and Issues

You can test this app and submit issues during the testing period of the JavaScript Chart contest.

Entries with serious issues will not be able to win the contest, but even minor issues might be important for overall results.


by rating


Fair Mammoth May 8, 2019 at 10:51
— Overall performance is below average.

— The third and the fifth graphs are slow when scaling, scrolling and filtering.
— The screen blinks when switching themes.
— Bonus goal is completed (+), however graphs are slow on zooming in and out.
— Dates on X-axis are overlapped when scaling.
— Box with the info jitters when swiping the graph.
iPhone 5S, iOS 12.1
Horizontal lines on all filters
Samsung Galaxy S9 , Android 8.0.0, Chrome 73.0.3683.90
Small styling issue with buttons (a.k.a. filters or chips)
Chrome 73
The tooltip text is cut on some dates
MacBook Pro 2015 / Safari 12.1
Fair Mammoth May 11, 2019 at 23:18
A pie glitch:
iPhone XS, iOS 12.1
double clicking breaks your schedule
Chrome / Windows 10
strange values rounding
Eager Boar Apr 17, 2019 at 12:37
It's not my solution - I have different font and color for axis legend.
wrong dark theme values color
Eager Boar Apr 17, 2019 at 12:35
It's not my solution - I have different icons and font for buttons.
point on line chart are white when theme is night
Eager Boar Apr 17, 2019 at 12:37
Not my solution - I have different icon arrow on details popup. Also I have correct color for points.
Wrong header layout
Redmi 3 / Chrome
Eager Boar Apr 17, 2019 at 12:39
It's responsive - on width less than 400px the dates go under the title.
The minimap sliders don't move when you grad them and move the mouse cursor outside the chart
Дмитрий Apr 17, 2019 at 13:44
Telegram admins, where is my charts? I sent the archive yesterday, the bot accepted and said "Perfect! Would you like to add an URL to your app? Totally OK if not"

I do not see it in the list, what's the problem?
Yuriy Reznik Apr 17, 2019 at 14:00
In some cases line goes away from view area
Yuriy Reznik Apr 17, 2019 at 14:01
No "all" raw in informer
Yuriy Reznik Apr 17, 2019 at 14:01
in pie informer should contains average value, not sum
Yuriy Reznik Apr 17, 2019 at 14:02
incorrect Y scale calculation
Pie chart timeline (navigator) has more than 7 days.
Chrome 73
The navigation at the end of the pie chart timeline (navigator) has glitches and sometimes wrong dates are displayed in the dates title.
Chrome 73
Small issue. The initially selected dates are different than 6 Mar - 6 April (the final month) and the first date in the range is half-off screen sometimes, but always off the size of the preview container.
Chrome 73
Black colors for all lines/bars/areas/pieces of pie in MS Edge
Edge on Windows 10
- huge perfomace issues on every chart even on latest devices

- no percents column in tooltip of percents chart

- hard to call zoom-in: tooltip running away from mouse

- page zooming allowed on mobiles

- x and y labels flicker when slowly resizing chart

- problems with x-axis after zooming-out a "Eaten fruits" chart, see screenshot
BQ strike mini, 4x1.3Hhz, 1Gb RAM, Chrome, Android 7
Eager Boar Apr 18, 2019 at 07:24
> hard to call zoom-in: tooltip running away from mouse 

On desktop you may just click on the chart to see the details, no need to click on tooltip.
laggy bar chart scaling in Firefox mobile
Unable to select time range by dragging in the preview area (outside of the current window).
Two visual bugs on the photo. Tooltip is out of main area. Last column is empty.
There is no snapping to days, months
Eager Boar Apr 19, 2019 at 07:07
Not bugs:
* Free space to the right is made for purpose - to show that there is nothing more to the right.
* I don't see any reason not to show a tooltip if a bar doesn't fully fit the chart area.
Eager Boar Apr 19, 2019 at 07:09
Can't reproduce
(Screenshot) This happens after double click on tooltip.
I found minimal range too small, it's not draggable.
Header range text appears behind another text, and then moves to its place
Zoom in, then all the way left
Iphone x
Delays and flicker when move filter range in pie chart but all bonus goals completed and works fine. Voted
Windows 8/Chrome 73
Nobody added any issues yet...