Bouncing up and down by bed

When you walk from a half slab directly to a bed thats half a block further down you bounce before stepping on the bed

What I expected to happen was, that the transition from the half-slab to the bed was smooth

What actually happened was that the camera behaved like I stepped half a block down for a split second, then bounced up again to the height of
the bed. Possibly a tiny gap between the end of the half-slab and the start of the bed

Steps to Reproduce:
1. Place a bed on flat ground
2. build a layer of half-slabs around it
3. walk from the half slabs to the foot-end of the bed(probably the other sides too)
4. You'll notice the camera go down, half a step, then pop right back up!