Sticky piston doesn't "spit" it's block when powered with a 1 tick redstone pulse.

When I power a sticky piston with a 1 tick redstone pulse, it doesn't act like a normal piston and only pushes its block, it also pulls it back.
This happens on my android 5.0.1 tablet asus K01E and on my android 6.0.1 phone ASUS_Z00ED