On mobile iOS devices that are in fullscreen mode and have enough space to show interaction posters that are not in mobile view, the text sizing seems to be wrong. Problem does not occur on desktop browsers or on Android. Might be fixable using
-webkit-text-size-adjust: none; at the right places
Example below: The MC Question task text is smaller than the option labels on the buttons. (1)
Also a glitch, possibly related, but not necessarily: circle before the button label is not centered vertically (2)
Texts have correct size.
Circles have the correct offset