rendering the small columnrange intervalles as png image too - highcharts

Question

I am rendering 4 columnRange in my HighChart and facing the problem that the small intervalles (one minutes intervall for example A has 12:51-12:52 and 12:56-12:57 )
are not being rendered when printing the result as png image. Is there any configuration in HighCharts to get around that?
https://jsfiddle.net/LLExL/7288/
Highcharts.chart('container',
{
chart: {
type: 'columnrange',
inverted: true,
height: 192,
spacingLeft: 10
},
credits: {
enabled: false
},
title: {
text: null,
style: {
"fontSize": "8px"
}
},
subTitle: {
text: null
},
legend: {
enabled: false,
},
plotOptions: {
series: {
pointWidth: 30
}
},
xAxis: {
min: 1,
max: 4,
categories: ['', 'A', 'B', 'C', 'D'],
title: {
text: null
},
labels: {
rotation: -45,
style: {
"fontSize": "7px"
}
},
gridLineWidth: 0
},
yAxis: {
type: 'datetime',
title: {
text: null
},
labels: {
rotation: -45,
style: {
"fontSize": "6px"
}
},
tickInterval: 1800000,
gridLineWidth: 1
},
series: [{
data: [{
x: 1,
low: 1483336800000,
high: 1483336860000,
color: '#66ccff'
},
{
x: 2,
low: 1483336860000,
high: 1483337340000,
color: '#ff9966'
},
{
x: 1,
low: 1483337340000,
high: 1483337400000,
color: '#66ccff'
},
{
x: 2,
low: 1483337400000,
high: 1483337700000,
color: '#ff9966'
},
{
x: 1,
low: 1483337700000,
high: 1483339920000,
color: '#66ccff'
},
{
x: 3,
low: 1483339920000,
high: 1483341780000,
color: '#79d279'
},
{
x: 2,
low: 1483341780000,
high: 1483342260000,
color: '#ff9966'
},
{
x: 3,
low: 1483342260000,
high: 1483345080000,
color: '#79d279'
},
{
x: 1,
low: 1483345080000,
high: 1483345140000,
color: '#66ccff'
},
{
x: 3,
low: 1483345140000,
high: 1483346400000,
color: '#79d279'
},
{
x: 1,
low: 1483346400000,
high: 1483346460000,
color: '#66ccff'
},
{
x: 3,
low: 1483346460000,
high: 1483347420000,
color: '#79d279'
},
{
x: 1,
low: 1483347420000,
high: 1483347600000,
color: '#66ccff'
},
{
x: 2,
low: 1483347600000,
high: 1483347780000,
color: '#ff9966'
},
{
x: 1,
low: 1483347780000,
high: 1483348020000,
color: '#66ccff'
},
{
x: 3,
low: 1483348020000,
high: 1483348200000,
color: '#79d279'
},
{
x: 1,
low: 1483348200000,
high: 1483352460000,
color: '#66ccff'
},
{
x: 3,
low: 1483352460000,
high: 1483352640000,
color: '#79d279'
},
{
x: 1,
low: 1483352640000,
high: 1483352700000,
color: '#66ccff'
},
{
x: 3,
low: 1483352700000,
high: 1483353840000,
color: '#79d279'
},
{
x: 1,
low: 1483353840000,
high: 1483354920000,
color: '#66ccff'
},
{
x: 3,
low: 1483354920000,
high: 1483355160000,
color: '#79d279'
},
{
x: 1,
low: 1483355160000,
high: 1483359480000,
color: '#66ccff'
},
{
x: 3,
low: 1483359480000,
high: 1483361460000,
color: '#79d279'
},
{
x: 1,
low: 1483361460000,
high: 1483361520000,
color: '#66ccff'
},
{
x: 2,
low: 1483361520000,
high: 1483361580000,
color: '#ff9966'
},
{
x: 3,
low: 1483361580000,
high: 1483361760000,
color: '#79d279'
},
{
x: 1,
low: 1483361760000,
high: 1483361820000,
color: '#66ccff'
},
{
x: 2,
low: 1483361820000,
high: 1483362060000,
color: '#ff9966'
},
{
x: 1,
low: 1483362060000,
high: 1483364280000,
color: '#66ccff'
},
]
}]
}
);

Answer 1

Increase width of the exporting image.
exporting: {
chartOptions: {
chart: {
width: 1000
}
}
},
example: https://jsfiddle.net/LLExL/7294/