When I click "back" I expect to return to a previous webpage. I don't expect to uncheck a checkbox. edit: Actually it doesn't uncheck, it just changes the perm

When I click "back" I expect to return to a previous webpage. I don't expect to uncheck a checkbox. edit: Actually it doesn't uncheck, it just changes the permalink as if I unchecked. Definitely not the expected behavior. (this is on FF31 Linux)