Hey Matt!
I’m glad that the issue on other events seems to be mostly resolved – hopefully that persists.
I checked out your link, and the tooltips indeed look okay to me, but if other issues arise definitely test a default theme like Twenty Fifteen again. If things work okay in Twenty Fifteen, then your custom theme is likely the source of the problem here, and contacting theme support is definitely a good idea.
I’ll close up this ticket since things seem to be resolved here, but open a new ticket at any time here if other issues or questions arise!
Cheers,
George