That doesn’t surprise me. I did contact the Astra team but there support is terrible and they claimed the plugin was not responsible.
I recently highlighted several major issues with the portfolio plugin in their fb group. The issues are now supposedly fixed by the latest update. Which I will test soon. I find it incredible that they released the product in its previous state. I was very close to asking for my money back.
Glad to be of help. Well you can tell them that is their plugin lol – changing the default property of all elements on the page is bad in several ways. If they want to control the box-sizing of their plugin elements then they should specify it…..