Savanna biomes have trees with broken trunks

I have looked at multiple worlds so far with this version. I like the new changes but I see a bug in each Savanna biome. A good portion of the trees have trunks that are not straight. Most of the blocks are inline and then all of a sudden a few blocks are shifted and not directly inline with the rest of the trunk. This can happen multiple times with a tree. It looks very odd.