During the checkout process, the back button (the Smith Cart one, not the browser back button) doesn't seem to work very well as far as I can tell.

Here is an example: charging international handling fees for non-Australian orders.

1. Add an item to the cart. So far handling = $0. Correct.

2. Check out, enter shipping details (Australia). Handling = $0. Correct.

3. Go back, decide to buy something else too. Now Handling = $X in the shopping cart. Huh?

4. This is corrected by the time payment is processed, but it doesn't offer much confidence to the user when the handling fee jumps around.

There appears to be a general issue with the back button, including this other one:

http://www.smith-consulting.com/forum...

Is this a big thing to fix?

Nobody else has found a problem with the back button during checkout?

It'd be good to know if it's just my problem, or a cart issue...

I'm using 3.96.

Hmm. Unable to replicate on the test portal.

Any ideas? I suppose an upgrade... but wondering if there is any other known problem the I've got wrong.