Thanks for the screenshot. That’s our Events List widget, not our Events Calendar widget.
For your future reference, here are all of our plugin’s widgets and shortcodes.
To your question, we just released an update for PRO that may affect this. I couldn’t replicate this issue on our latest versions, even with trying various Event Categories. Could you please make sure all your Modern Tribe plugins are at their latest versions?
Once you verify you’re on the latest versions, please test to see if the issue is still happening for you.
If it is, I’d recommend disabling the plugin(s) that add the extra “to use as shortcode with id” and “display/hide widget” options and see if you make any progress with that.
Please let me know how this goes for you.