UI Tabs and sync ajax causes bug showing the the processing state

Hello I hope i found a bug in the Tabs component. If u load the content with ajax and set the option async to false IE / chrome / safari dont display the processing state.

if i do something like that

$('#tabs').bind('tabsselect', function(event, ui) {

$('#t3').attr('class','ui-state-processing');

alert('break');

});

looks like the state gets instantly overwritten with something else.

it works for the moment until i confirm the alert box.

Fire fox and opera seems to work like expected. is there a fix for it or is that not fixable until the next version?

Thx in advance

Thomas