When editing a page in portrait mobile responsive mode, I am unable to change the font size. See screenshot. Font size is zero, displayed font does not change. However, the changes do take place. If I save, then the font size or margin or whatever change takes place happens. Its just not reflected in the T4 Page Editor.
https://akyumen-my.sharepoint.com/:i:/g/personal/jeff_hunter_akyumen_onmicrosoft_com/EVOv4iuIkkNGh_9u3Ic2abwBTJRaK3QD65xOr0gpobFvGQ