in content_lock/js/content_lock_init.js on line 17 we have:
return Drupal.t('Be aware, if you press "OK" now, ALL your changes will be lost!');
However, the actual text of the button, I'm seeing is "Leave this page", not "OK". Is this browser specific? If so, maybe we should add a check for the browser and try to present matching text, but I believe this may just be an oversight and that it should say press "Leave this page".
This is an accessibility issue because non-sighted users may be confused by being told to press "OK" and then never hearing the screen reader give an "OK" option. Even normal users may be confused by being told to press something that isn't there.