1. When clicking in the bid table on the post tab to set unit bid as in the table,
   aux sets it to the unit_bid_from_table * table_stack_size.
2. Bid table coloring is broken too. It colors in red auctions where stack bid is lower than entered unit bid.

On the screenshot I'd just clicked on the selected row:

this is intended. the point of bid undercutting is to have a lower stack price so you appear higher up in the default auction house. (the listing doesn't list the actual unit bids, it lists the unit bid needed to get the auction's stack price with your selected stack size)

actually you may have an old version that works differently

I'm using ac9d6ff