When using $.dialog() in Chrome/Safari. The option position: "center" only aligns the dialog box to the left center.
Again, this is Webkit only. FF3/4, Opera, and IE(sad IE works over Chrome...) all position properly. I did notice though, cause I have another project thats currently using jQuery UI 1.8.7 is working fine. But the bug is in 1.8.9.
CSS did not make a difference its WHY I didn't post with CSS. But hey, I should have been thorough. And could you guys give me a chance to reply before marking it "Works" .....
The css file linked in your latest jsfiddle ( http://hoa.ath.cx/~dm2/src/css/jquery-ui.css ) does not contain the word dialog. It seems to contain only jquery.ui.core.css and jquery.ui.theme.css.
Here's an example that shows the bug does not exist in 1.8.9 when the dialog css is included: http://jsbin.com/uvewe5