If you put a block, such as End Stone down and try to light it from the side the correct fire animation only happens when you light the north face. Otherwise, it will look like I have it in the attached screen shots (the first one is the south side, FYI).

You can see I have a fence on one side of the block, and if I try to ignite the end stone face that is touching the fence, I swing my arm like an idiot and nothing happens, unless I'm in survival (and then the Flint & steel loses durability like it's actually doing something). This may be considered its own bug.