Proxied calendar month view doesn't change until dates are moused over

If you go to Tools, Options, Environment, View tab, under Set Default Views, select Calendar, then to the right in Group select Month from the drop-down, click Apply, OK, Close.

Now, open a Calendar window from the Calendar button on the toolbar.  Drag the lower right of that calendar window to expand the size so you can see all 5 weeks clearly.  Then go up to the proxy in this open Calendar window and proxy over to another calendar, preferably one with a lot of appointments.  

The first time you proxy over, you may get it the correct display in about  3 seconds for the proxied calendar.  Proxy to another calendar, or back to yourself, and you'll notice the calendar data does not switch until you mouse across it with your cursor/pointer and the data will refresh as you mouse over.  

This does not happen in the Day or Week view, only Month view.