Deleting from cart reappearing

Hi there, I’ve got a problem with a website where if you delete one item from the cart and then another, the first one re-appears. If you try and delete that one the 2nd deleted item then re-appears – you get stuck in a loop!

Steps to re-create (needs to be IE or Chrome on PC):

1. Add any 3 items to cart
2. Remove an item from cart
3. Remove another item from cart
4. See that the first one re-appeared

This is running latest WordPress and WooCommerce. I also setup a stage site (on a different hosting environment I should add) and switched off all plug-ins other than WooCommerce and also changed the theme to a default WordPress theme.

It does seem to be fixed in Chrome on the staging site but the issue persists in IE (have tried both IE9 and IE11)

Live URL: https://www.glamourboutique.com
Stage URL: https://1085097365.1072937515.temp.prositehosting.co.uk

Any suggestions gratefully received!

Thanks
Simon