Diorite, Andesite and Granite Can be used as Stone to Craft Slabs

I could not craft stone steps, but, as in the screenshots, I can craft stone slabs from diorite, andesite and granite (or from any combination of diorite, andesite, granite or cobblestone when using the MATTIS crafting system). On win10 (using the PC crafting system) stone slabs can be crafted from any combinations of these materials except for cobblestone. Strange.

^{Addition by [Mojang] Mega_Spud (Jay Wells)}
These can also be used to craft repeaters and comparators as well as stone slabs using the Windows 10 PC crafting system, which creates an inconsistency between versions (See ticket MCPE-25191 for this issue).

original report follows
as everyone knows,diorite can't be made into a stone steps,but I let a diorite to it ,not only in Build 7,but also in Build 8
The Device of me is RED MI 1s
备注，当时是我的一个朋友告诉我的并给我截图，我本人并没有遇见。同时感谢各位的认真负责，以及在语法上的修正，谢谢。希望能被修复吧！