Gravel slab bug when falling on a chest.

[TheShawtgun]

I have found a bug where when you allow a gravel slab to fall onto a chest, it gets stuck in a falling loop and causes frame rate drops. It also remains unbreakable unless you allow another gravel slab to fall on top of it to combine them, which lets you mine the now still gravel block.
I would include a screenshot, but that is something i have never really used before, so i kinda mucked about through my files looking for it and couldn't find it. :/
Pretty easy to reproduce though, it has happened to me every time i tried it. (but i haven't tried it with sand slabs yet)

[TheGatesofLogic]

Can confirm, not really having the frame-rate impact he claims though.

[FlowerChild]

Fixed for next release.