On regular forms fields such as name, email, demographic, dropbox etc all values are "sticky" when a visitor returns to the page.

However, slider values do not appear to be sticky.

In my below video example I have a slider with a DEFAULT / INITIAL value of 4

While completing the survey (as a visitor) I change the slider value to 7 and click next.... then I click previous to confirm the value was sticky. 

To mimic a "returning visitor, I then refresh/reload the page or the iframe containing the embedded survey form. 

On refresh, all other values are sticky, but slider values are not.

Each time the survey form is reloaded the sliders value reverts to its default (4).

Video example here:  http://fresh-start.com.au/wp-content/uploads/2016/04/zoho-slider-values-not-sticky-for-returning-visitor.mp4

Please confirm and provide fix.