I ran a schema compare, and after each compare, I tried to close the tabs. They simply didn’t seem to notice. After 5-10 attempts, all of a sudden they cooperated. THis happened with three schema-compare generated scripts.
Thanks for your feedback ,It 's a known bug,we have TSS-159 for it.
Please notice the tab which can’t be close if the button’s tooltip is keeping flashing,
if yes,please move the mouse a little,we will fix it soon.