My gut reaction is no.
People, myself included, start and grow plants in clear glass jars filled with water all the time. Remember in grade school spouting beans or peas in a glass jar with the seed pressed against the side by a roll of construction paper so you could see the roots develop? Ever start a sweet potato plant in a jar with the roots growing into water at the bottom? Ever stuck a houseplant cutting into a jar of water to root? Those sweet potatos and houseplants grow for weeks with root exposed to light without harm.
The only possible damage is if the roots are baked dry by the sun to the point of no return. Since you don't have it in full sun, not an issue.