UI Tabs ajax call breaks when other ajax requests remove tabs element

The success function in the ajax call made by the ui tab code does not check to make sure the tab div still exists before populating the html. In our case if a user has made a second request which removed the tab element, the ajax call for the tab still returns and blows up the app. The offending code is the $(a.hash).html(r); call in the success function. I simply add an if($(a.hash).is(":empty") around that line in the success and this seems to fix the problem.

success: function(r, s) {

if($(a.hash).is(":empty")) {

$(a.hash).html(r);

}

...

}