Button-Card Icon gets smaller, as card gets wider

Title says it all, when I increase the width of a button-card card, but keep the height constant, the icon size gets smaller. This issue persists even when using the size option to scale the icon, as it doesn’t seem to take effect.

I have included a screenshot of the issue, and my goal is that the icons of all the buttons are the same size.

I would be very thankful for any help.