I am seeing the same issue tonight, although the other members of my gaming group who logged onto dndbeyond before I did are not seeing it and in fact can see my character sheet and roll attacks on my behalf as per normal. Additionally, there is an equally non-functional "beyond 20" button down next to the "wield" and "remove" buttons. Unarmed attack works fine, only the weapon attacks are showing the non-functional "Display in VTT" button.