FontSize not present on some items in REST API

I am migrating an app over to Miro’s V2 API and I’m finding that font sizes are not available in the the style object for text items.

E.g. I have a text node that has the following style object:

{
      "fillColor": "#ffffffff",
      "fillOpacity": "1.0",
      "fontFamily": "open_sans",
      "textAlign": "left",
      "color": "#1a1a1a"
}

I know from looking at the board and by checking it on V1 of the API that this text item in fact has a font size of 144px, but this isn’t present on the V2 API response. Is there some way of retrieving this font size? Otherwise I am going to have to mix the V1 and V2 APIs which doesn’t exactly seem like good practice.