Prevent proxy bidding to automatically raise bid to the reserve price (if proxy bid amount is higher than reserve price)

In case you need proxy bidding not to reach reserve price instantly ie when reserve price is lower than current bid, next bid will be current bid + min bid increase, you can use code below in your child theme functions.php:

add_filter( 'auctions_for_woocommerce_proxy_bid_to_reserve' , '__return_false', 20, 3 );