Redstone signal bug when starting a world

Hi !

I was trying some things in creative, in Minecraft Bedrock.
If you have a redstone signal of any strength and an observer watching the redstone dust, when you leave and come back to the world, the observer sends a pulse. 

I tested it by having different signals possible with a redstone torch or an hopper or nothing, and a copper bulb at the other end of the observer. I tested it with and without a comparator and the problem, is the signal. It does not do that when the signal is 0, but it does starting to 1.

I tested only with the first redstone dust and not the ones after.

I hope it is a bug and not a feature so that we can compact more machine in the future !

Thanks to everyone reading this !