There is a similar bug in the end, which is even more annoying as it is over void sometimes
This happens in the nether too, and it takes your overworld coordinates and either doesn't divide by 8 or x8 (nether) or doesn't set to 0 0 (end). Also sometimes there is a nether portal in the nether version of this and sometimes there isn't. People have reported both individually but I am not sure why bot together, I might be unlucky and get both
Might be the nether coordinates issue, takes your overworld coordinates and instead or dividing by 8, does x1 or x8 of them. His might have put you in a wall and suffocated you. It sometimes spawns with a portal, sometimes doesn't, and sometimes doesn't happen, and it's annoying. Also happens in the end over the void.
It seems that it either takes your overworld coordinates or x8 both ways, because the nether is supposed to be overworld coordinates divide 8. Its been around for too long and works in the end too which is even worse as its in the void
It tends to take the overworld coordinates and put them in the nether and end, this has already been posted but needs to be fixed. It seems to do it randomly but this needs to be fixed
I think it is just a chance thing, I have had this happen a few times on different seeds. It also works in the end
Neither of the nether woods are meant to be flammable, the planks are what are buggy