Hello,
We are facing some problem with the ajax add to cart.
The mini cart item wont update when there out of stock variations item added to cart.
EG:,
Item have variations A and B,
Variation A have 10 stock available and variation B left 1 stock available.
When customer added the variation B last stock to cart, and he added again variation B that are out of stock, the out of stock message will appear on bottom of screen and when customer proceed to add variation A, the mini cart wont update, unless customer refresh the page.