Description
Expected behaviour
When rendering large datasets with Boost Module enabled the user should expect increased performance and efficiency.
Actual behaviour
When rendering large datasets with Boost Module enabled lines are no longer drawn, the points can still be hovered but are not visible until hover.
Live demo with steps to reproduce
https://jsfiddle.net/5bvLgs5w (HighCharts own demo)
The issue has been hard to reproduce locally, we've had complaints from customers (licensed OEM) that recently their lines have stopped rendering, with little luck reproducing we've found success utilizing BrowserStack, Windows 10 + Chrome 68. As far as we are told these users have no issues in other browsers, just latest Chrome release.
It should be noted when using HighStock shrinking the navigator to reduce the number of points displayed will eventually render the lines.
Product version
Highcharts 6.0.5+
Affected browser(s)
Chrome 68.0.3440.106
Example Screenshot of resulting behavior:
Activity