Chunks unload via teleporting with command block before a button or pressure plates unpowers

I built a commandBlock with a pressure Plate directly above it so i have a "teleport-station". when i teleported back the pressure plate was still down like someone stands on it. same with a button. i think the chunk unloaded to quickly

What I expected to happen was...:
The pressure plate and button should be back at their default position when i come back

What actually happened was...:
They were still powered

Steps to Reproduce:
1. Build a commandblock with teleport command and pressure plate attached to it
2. use it and teleport yourself far away
3. come back and see the result