wrong redstone state when reentering world

I'm using 0.13.0 beta build 3, Samsung Galaxy S4 GT-I9505

I tried to create a minecart storage with Redstone. It works as intended but when I re-entered the world the trapdoor holding back the minecarts got energy for a short time from the circuit and released some minecarts.

The last two screenshots show that this bug is not related to the trapdoor. The minecart on the powered rail drove down a little bit.

Steps to reproduce

• build the test situation form the first screenshot

• let a minecart drive onto the trapdoor

• re-enter the world, you hear the sound of the trapdoor and the minecart falls down