Not sure if we have the same issue but I reported one last week to airbnb and was told it was an intentional change and I would have to live with it. The listings side scrolls independently from the calendar/prices so there is a greater chance that I could make a change that would erroneously cause problems for the guests. It is a lot more work for me (and we are a small resort). If this is the problem, I hope all hosts will let airbnb know the problems they have caused.
The multicalender on the website has two identical scrollbars, one at the top (just beneath the dates) and one at the bottom. The one at the bottom works OK, the one at the top is failing (only shifting dates, not the calender)
We had exactly the same problem for nearly a week, that when trying to navigate across 35 properties was incredibly difficult with the properties and guest info moving independently of each other. Surely there could be no way that this was an intentional improvement?
We now have it back and working properly this morning.