Bug with 2 candlestick datasets on one chart.

[JokerMZD]

Hi,

I'm trying to display 2 candlestick datasets on 1 chart.
They have different starting points in time. To determine correct position I use set of dates from both datasets
var keys:Set = []
for i in 0..<historical.count {
keys.insert(String.init(historical[i].epochdate)) }
for i in 0..<forecasts.count {
keys.insert(String.init(forecasts[i].epochdate)) }
let labels = keys.sort()

To determine correct position during dataset population I use indexOf method of array.
labels.indexOf(String.init(historical[i].epochdate))!
labels.indexOf(String.init(forecasts[i].epochdate))!

And after initialization historical dataset appears partly and disappear when zooming or translating chart.

Here is the video - https://youtu.be/oRoRdRiUgGU.