Hi – I’m sorry you’re experiencing difficulties. That’s definitely an odd problem.
I do see you already tried deactivating all other plugins and switching to a default, unmodified theme: can you confirm what if any impact that had on this problem? If it resolved the issue, were you able to identify anything – your theme, or perhaps a social media plugin – as conflicting? I do for instance see some extra code relating to Facebook being injected and that appears to be causing the breakage.
As an extension of that, do you have any customizations such as snippets in your theme’s functions.php file or any custom templates within a tribe-events subdirectory in your theme (and if so can you try temporarily removing or disabling them)?
Let me know how you get on!