Datepicker UI: keep button positions consistent

Hello - I sent this suggestion to Zendesk Support and was encouraged to post it here, so here goes...

******

Good morning - may I make a suggestion for a UI tweak?  If I'm using the date picker to set a due date or other date field, on the ticket web interface, the height of the date picker changes depending on the number of days in the month.  You can see in the example below that the box for May is larger than the box for June:

The problem is that the boxes aren't top-aligned, so if I want to hit the "next month" button (>) at top right several times (because I want to get to September, say), after I hit it on May, the button moves downwards (see arrows).  Clicking again (without moving my cursor) then closes the date picker and loses my progress in cycling through.  Instead I have to click once, then remember to move my cursor to the new button placement, and click again.

It would be easier if the boxes were top aligned, or at least the Previous/Next month buttons stayed in the same place.

Just a thought...