Villagers' "Trade" type gossip is acquired incorrectly

When you trade with holding “Shift” (that makes you to take all trades with one click for convenient GUI usage purposes), then “Trade” gossips value is acquired by villager only as 2 points(as if I had traded only one time), although you might trade more than 1 single trade. For example if you have trade with farmer villager(profession does not matter and other villager unique tags, or attributes) and he suggests 15 beetroot for 1 emerald, then if you put 60 beetroots, hold shift and take 4 emerald in one click, then the villager will get 2 value points of “Trade” gossip, meanwhile if you would trade manually (4 times click on emerald), then you'd get 8 value points of “Trade” gossip.