Hello Vema,
In older versions of Helical Insight, the sub-chart was displayed in a larger size.
But this was causing responsiveness problems, especially when charts were used inside dashboards. Sometimes the chart was getting cut or not aligned properly on different screen sizes.
In version 5.2.3, this issue was fixed. Because of this fix:
Charts now fit properly inside dashboard components
Layout looks correct on different screen resolutions
Chart cut-off problems are avoided
Due to these improvements, the sub-chart may look smaller than before.
This is normal behaviour and done by design.
Also, more improvements for chart display and responsiveness are available in Helical Insight 6.1. We recommend checking the latest version. Read more about the card visualization with sub charts.
Thanks,
Helical Insight