Every Browser has an other "Remember me" checkbox

Steps to reproduce:
1. Choose browsers
2. Go to the login page
3. Click the "Remember me" checkbox

Actual Results:
Safari 9.0 and IE 11.0.10240.16384 (Windows 10) strange checkbox
Chrome 45.0.2454.101 and Firefox 38.2.1 different checkboxes

Expected Results:
Same checkboxes