Hi, scroll bars are disappearing in Mac Safari.
Users are getting stuck and not able to navigate around the form or within controls e.g. time selection.

Screenshots attached
Safari - Contact
Safari - Organisation
Safari - Case
IE - Quick Campaign
Safari - Quick Campaign (the time scroll bar disappears and using the cursor causes the screen to jump and keeps displaying the same times instead of scrolling.
IE - Quick Campaign Email
Safari - Quick Campaign Email (cannot get back to the form here)

Please could you investigate and let me know here.

Regards
Craig