Button HeightRequest and WidthRequest ignore if RowDefinition and ColumnDefinition set to *

Hi,

I have created a button in C#, setting the HeightRequest and WidthRequest, however these values seem to be ignored when the RowDefinition and ColumnDefinition are set to *. They are only taken into account if Auto is used.

Is this expected? I would have thought that the HeightRequest and WidthRequest would be used regardless of the RowDefinition and ColumnDefinition values.

Thanks

Paul Diston