Hello, I am running a WooCommerce e-shop with the following versions:
I don't know if this issue was also in the past, but I noticed it now. When I add a product in the cart everything is fine and the discount as set from the "Woocommerce Bulk Discount" plugin is properly applied. But, if I choose to "Update Cart" without having done any changes (added more products or increased a product's amount) then for some reason it reapplies the discount to the already discounted price.
So, if I have a product which costs, let's say, $100 and I have 10% discount on this product with the plugin, on each "Update Cart" or "Cart" page refresh it drops by $10 every time and it sets as the original price the previous discounted price.
If you select though "Proceed to Checkout" everything is normal, so in the end no Order is messed up, BUT it's very confusing for a customer who might do this action.
I am letting you know in case you are making a plugin update in order to include a fix for that as well!