— Overall performance is poor.
— The graphs jitter on launch.
— The app is slow when scaling all the graphs and filtering graphs #3 and #5.
— The graphs take the entire width of the page when viewed from desktop browsers.
— Bonus goal is completed, but sloppy on zooming in and out. 

The pie chart for the first date can not be opened;
The pie chart for the first three dates is broken.

Bars on bar chart are overlapping each other (especially noticeable when chart is zoomed in on wide screen)

Bars are overlapping each other

Fast scrolling brakes as minimap, so main chat view

bad range

Dates changing value during move event instead of change position.

Can’t choose the left most points

... and as you can see from my video above, the left points start too far.

You can set viewport outside the range

Not working in IE11 and slow animations when filter selection changed
but like for the all bonus goals. Voted

There are possibility to set left edge less than "0". You have to catch right handler of minimap range and fast move it left - in the one moment the "right handler" becames on the left from "left handler" and even out of screen.

Pie is not showed for firsts days off input data

In zoom view, viewport doesn't snap to days.

Bar animation is flickering when you switch series visibility

When you zoom out from pie chart, date is set wrong.

I got JavaScript error few times: "[Intervention] Ignored attempt to cancel a touchstart event with cancelable=false, for example because scrolling is in progress and cannot be interrupted."

When you zoom in/out — series selection is resetting.

No animation of changing values/dates.

Wrong default range on zoom (should be exactly 1 day, as per mockups and zoom logic)

Boundary values aren't aligned properly to canvas.

When the pie chart is open, it jumps to the wrong date.
It is unclear how the values displayed in pie chart tooltips are calculated - they don't correspond to the values of the related date.

Errors in the 3th graph