It seems very hard to break a Wooden Slab using an axe and the slab is totally destroyed. Using a pickaxe the slab is easily destroyed and available to be picked up.
My guess is the wooden slab has been incorrectly categorized under stone.
(I should add, Wooden Planks do break correctly with an Axe.)
Linked issues
is duplicated by 27
MCPE-90
Wood Half Slabs
Resolved
MCPE-848
Wooden Slabs need to be broken by a pickaxe
Resolved
MCPE-927
Wooden slabs take a long time to mine using an axe but takes only a short time to mine with a pickaxe
Resolved
MCPE-1023
Wooden slabs
Resolved
MCPE-1514
Wooden Slab thinks it's stone?
Resolved
Comments 7
sachi: This one was reported before yours, so MCPE-2298 is the duplicate of this report.
It wasn't a bug; Data values are 43. (43:2) 43 Is Stone
as it's oak wood slab. Maybe 0.7.0 it will be fixed.
By the way, if you happen to destroy a pre-0.7.3 wood slab in 0.7.3 or later, (still with a pick) you'll get a "wooden" wood slab, that is easier to break with an axe. Also, if you store an old wood slab in inventory, the tooltip will say: "Fake Wood Slab". -Taken from Minecraft Wiki. I have only played v0.2.1 demo and v0.8.1 full.
This was just fixed recently in the real PC Minecraft version. Don't expect fix for a while.