It should be possible to copy the value from and paste values into a time input field. This may be implemented via context menu entries and/or via the general keyboard shortcuts Ctrl+C and Ctrl+V. Copying the value should copy it as plain text in the format shown inside the field, e.g. "12:34 AM". Pasting should be smart enough to recognize the format. E.g. pasting "17:00" should be converted to "05:00 PM". Sebastian
Too late for firefox 52, mass-wontfix.