Recalculate Cart Removes All Products From Cart

Hi, I'm testing 4.3.4 and I have a problem with Recalculate cart - it removes all products from the cart instead update quantities.

Hi, I'm testing 4.3.4 and I have a problem with Recalculate cart - it removes all products from the cart instead update quantities.

This issue requires examination on your server. Please contact us via Customer Help Desk and provide temporary access to your server by clicking on the Add record link on the Access information page of your Help Desk account so that we could examine the issue.