ajax:NumericUpDownExtender - generating display style of inline instead of inline-block

The pages are in a master page.  I'm looking at it in chrome and the entire div that's generated is on the next line down from the label text.

Here's what's being generated:

<div style="position: relative; width: 64px; font-size: 18px; height: 18px; padding-right: 24px; display: inline; "><table ... </table></div>

Notice the display parameter is inline.  This should be inline-block.  I have no idea why it's rendering this way. 

I'm using the latest version of AjaxControlToolkit (4.1.60919.0) but it did the same thing in ver 3.5.

If I change it in dev tools to display: inline-block it displays as it should.

The control displays fine in other browsers. When I go to the control toolkit example page it works fine and is generating inline-block.

Any suggestions on how to fix this?

Thanks!

--Bob