Chest don't open if slab is on top of it

Put the summary of the bug you're having here
Device is - Android Samsung Galaxy S1 ICS 4.0.3 (it wasn't listed in device option, i chose the most similar)

What I expected to happen was...:
Chest should open if slab is on top of it

What actually happened was...:
Chest didn't open if slab is on top of it (downer position, in older versions everything worked perfetly)

Steps to Reproduce:
1.place a chest
2.put slab (any kind) on top of chest (chest opens if slab is in upper position)
3. try to open the chest