Fences/panes/walls/bars/torches connect to a number of non-solid blocks

Fence posts, as well as walls, glass panes, iron bars and torches connect to a number of non-solid blocks listed below. This probably results from the improved connectivity towards stairs but can't really be intentional.

Affects:

• sticky pistons:

  	front	back	side
  retracted	yes	yes	yes
  extended	yes	yes	no

• normal pistons:

  	front	back	side
  retracted	no	no	no
  extended	yes	no	no

No longer affects:

• (Fixed in 17w16b)
  • nether portals
• (Fixed in 17w16a)
  • banners
  • buttons
  • dragon eggs
  • fire
  • levers
  • pressure plates
  • rails
  • redstone wires
  • signs
  • structure voids
  • sugar cane
  • tripwire
  • tripwire hooks
  • vines