Hi Emil,
Greetings from Syncfusion,
We have analysed your query and we would like to know that while using chart inside the FlexLayout directly the width and height of the chart is adjusting automatically.
We have prepared a sample based on your requirement and it can be downloaded from the below link.
When checking the gird layout inside the FlexLayout without setting the Width and Height the chart is not displaying. We are validating this issue using the GridLayout the chart is not showing without setting the HeightRequest and WidthRequest inside the FlexLayout.
Can you confirm whether you are using the above scenario “Chart in grid layout”? This will be helpful for us to investigate further and provide you a better solution at the earliest.
Regards,
Bharathiraja.