Foliage not centered around the origin if trunk_width is bigger than 1

Hello,

The changelog for the snapshot implies that modifying the trunk_width field makes a tree with foliage and trunk having the same center but it seems that the extra part of the trunk is off-centered.

Update: actually the foliage is off-centered. It generates in the northwest corner.

Wrong, original idea in parentheses (If X and Y are the center of the foliage, then X and Y are the coordinates of the north-east part of the trunk with the being centered at (X+trunk_width/2,Y+trunk_width/2).)

Picture attached with the associated file. The screenshot shows that custom oak trees with elongated blob foliages have unaligned trunks and foliage.