Pumpkins and Jack 'o' Lanterns can only be placed on solid blocks

Put the summary of the bug you're having here

*What I expected to happen
was you could place Jack 'o' Lanterns on any block.

*What actually happened was
Jack 'o' Lantern could only be placed on specific blocks, and not any block.

Steps to Reproduce:
1. Try and place a Jack 'o' Lantern on a block e.g. Fence
2. ...
3. ...