When creating a 2x2 spruce tree the north west corner of trees that have 2 leaf blocks above the last log that appear above everything has a log instead of a leaf making it look weird, tested multiple time and happens with every tree like this and i do not believe this was intended
Linked issues
Comments 3
I think MC-36762 has a better description, because of pictures.
This ticket has been marked as a duplicate of MC-36762, in favor of the more general or better information provided.
I could reproduce your bug. Confirmed.