Thank you for asking. This turns out to be not so much a bug as a question of conflicting features. It turns out that if you use the controls in your excellent Parabola Settings system to set the total width to an unusually narrow value, the The Events Calendar silently shifts to smart phone mode and does not display the expected front-side controls based on the settings selected for The Events Calendar. This appeared to be a bug in your theme because changing to a different theme made the problem go away, but that’s only because by changing to a different theme also turned off the display settings for Parabola. If there is a bug here, I’d say it’s on The Events Calendar side for not better documenting this issue, but they were at least very helpful with tracing the issue. So, sorry to bother you with this issue but thank you for following up.