I wonder if I'll be able to reproduce that bug one day XD. A dude means that it is in my falling trees plugin, but I can't find it, believe that I did fix it before.
https://dev.bukkit.org/projects/fallingtrees
Atm it might look because of his comment like it exists… well… for me, it kind of doesn't… sad... I might ask him some time to show me how to reproduce it…