Tooltip: Disabled tooltip opens after content is changed

jQuery version:

1.9.1

jQueryUI version:

>=1.9.2

browser:

firefox 19.0.2

operating system:

Windows 7

To reproduce issue:

use jQueryUI>=1.9.2 (1.9.0 and 1.9.1 behave as expected)

initialize disabled tooltip with

$('#id').tooltip({disabled:true});

open it by

$('#id').tooltip('open');

hover mouse over the tipped object and exit

tip disappears

expected behavior:

tip shouldn't hear the mouse exiting and stay put

jsFiddle example:

http://jsfiddle.net/Na4C3/