I’ve been trying to hunt down the issue with this because I have several sites this is happening on.
It appears to be an issue in events-calendar-pro/Tribe/Main.php lines 1386 -1388 & 1426 – 1428.
This hide by default option is returning TRUE on Posts and somehow flipping the query return order.
I’ve temporarily disabled lines 1426 – 1428 in the code and it’s fixed my issue, however, it’d be great to get an update pushed on this that returns true for only events, this is breaking all of my clients’ sites with Events Cal Pro on it.