Problem in the generation of trees

Good afternoon, Mojang!
I apologize beforehand because I have published a bug in the Spanish language, know how to forgive is that I am new on this page and I am learning how it works ...

I'll get straight to the point, a few hours ago I was testing the new Minecraft update (1.13) and in my few hours of play I have visualized some bugs regarding the new trees that we can find.

It is quite difficult to explain what state they are in, so I decided to take some pictures of the problem, I hope it can be solved ...

Maybe other people found this and reported it on this page but just in case I also leave my grain of sand.

Thank you very much and cordial greetings, Breoniof.