Chiselled and Smooth Red Sandstone Do Not Have Smooth Underside

Chiselled and Smooth Red Sandstone blocks have the wrong texture underneath, when compared to the Java edition. See also the related ticket for regular sandstone: MCPE-20162.

What I expected to happen:
They should have a smooth underside.

What actually happened:
They have a textured / cracked underside.

^{Tested on Samsung TabPro SM-T520 on Android 4.4.2}