I notice that the site is now correctly updating the number of spins needed to get the next chest on the box that pops up when hovering over the progress bar at the top of the page.
However, I also noticed that immediately after being awarded a chest, the progress bar seems to always start at 1 rather than 0 like I would expect. In particular, I was just today awarded a Legendary Chest (30 Spins), and the progress bar tells me I only need 2 more spins to get the next (3 Spins) chest. See image.