Graph height (rendering ?) problem

Hi all,
I just downloaded this plugin because I need a radar chart for my woocommerce products.
If I paste the shortcode in post and pages it works very well, but if I try to use the shortcode in a normal php page with echo do_shortcode(“[wp_charts ……. ]”); I’ve a height problem.
Seems height is fixed to a value, instead width is changing if I change the width parameter.
Obviously I already tried to force height, width, alignement, canvasHeight, canvasWidth and all possible parameters to fixed values, but nothing.
I already tried with other charts type but the result is the same.

Seems a rendering problem because if I modify the zoom of my browser page automatically the height is fixed to the correct value! It just needs to re-render canvas to obtain the correct size.

so I think it’s a rendering problem. Is there a way to force the re-render the chart?

Thanks in advance,
Fabio

https://www.ads-software.com/plugins/wp-charts/