One of the trees effected is the tall skinny one - the one that is a trunk with a few leaves. The billboard lies down horizontal.
Ignore my comment about the tree sizes from billboard to full mesh - I've noted that this is just due to the way you are now implementing the billboards - the 1.3 version were more 'ghosted' so I didn't really notice the change.
Personally, I might edit my 1.4 include to use the old billboard system as I prefer that. The new ones certain look great - much better quality, it's just you notice the size difference more now.
Ignore my comment about the tree sizes from billboard to full mesh - I've noted that this is just due to the way you are now implementing the billboards - the 1.3 version were more 'ghosted' so I didn't really notice the change.
Personally, I might edit my 1.4 include to use the old billboard system as I prefer that. The new ones certain look great - much better quality, it's just you notice the size difference more now.