Portal Bug

If you use the command "/setblock <x> <y> <z> end_portal" and jump through it, it will teleport you to the Nether. Then, if you use the resulting Nether Portal, you will be teleported to an End with no dragon, a portal back missing some of its portal blocks, no other islands next to it, and no end crystals! This is a major bug and I hope you fix it!