Swamp tree with vines cannot be reproduced

Swamp trees are simply oak trees with vines on, and there are no 'big birch trees'

Swamp tree it a oak tree but not have vines on regenerating with sapling

can I ask what you definition of "Big Birtch Tree" is? I've been able to get large birtch trees. they are just random growth of saplings... if its something else please attach a screenshot so its a little clearer

oaks planted in swamps have never generated vines past the ones that were created by the seed

Swamp trees are actually oak trees >>> oak trees can be reproduced and you still can manually plant vines on them, so "working as intended".