So two or so years ago I switched from Shopify Plus back to a regular Shopify plan when our business took a nose dive. Shortly after we started to notice random customers reporting that they were getting the wrong product sizes. If someone wanted a XL t-shirt they ended up with a small which is the first option for sizing. Customer selects the product option they want, clicks the add to cart button and then a small ends up in the cart. After a few more people reported this we started to log all of the cases and it looks to be completely random and not related to a size, device, or browser however a small which is the first product option always seems to be what this bug reverts to. A customer can have a few shirts in their cart and it may only happen to one of the shirts in the cart. One person said they noticed the bug, removed the item from their cart and tried to add it 4 more times and each time it went to small. It's only the 'Size' product option.
WHAT I'VE TRIED
At this point I am lost and have no idea what else to do. This bug is costing me serious money and customers. I find it hard to believe that I am the only person who is experiencing this problem. If anyone else has or is seeing this can you please let me know? At this point I've already started building another site on another platform but moving over 900+ products is going to be a massive pain. Any help anyone can give would be greatly appreciated.