Using Essential Studio 2017 Volume 1
In one of the projects I am working on we've noticed that the charts (stack bars) created do not show up on Apple Keynote and appear skewed/distorted on Google Slides. They do render as expected on Microsoft Powerpoint on Windows as well as Mac.
I think it is a bug with the chart rendering engine in the Syncfusion.OfficeChart library as I've noticed merely opening and saving the file on a Mac having both Powerpoint & then reopening the file on Keynote fixes this. It appears the markup generated by Syncfusion is repaired by Powerpoint and therefore the charts magically start appearing on Keynote as well.