I am also seeing this behavior after upgrading. In Chrome devtools it appears that the <td> tags with class “tribe-events-othermonth tribe-events-past mobile-trigger tribe-event-day-30” are not closed (of course this example is just for the othermonth but it persists across the entire calendar view.) It only appears on the /calendar landing page. I’m sorry but I do not have a public URL to provide, but I can provide screenshots.