Could be. Here's what comes up in my emulator (Gambatte):
It's not solid and sits in front of the sheep sprite
I'm not sure where that sprite comes from, it could be junk in the memory, but I do have a pickup that spawns there. I removed the pickup since I couldn't get it to work before the end of the jam. I guess I left something there and the game is rendering whatever is in memory.
I'm planning to continue work on the game. When I get the pickup to work it should fix the problem.
Thanks for the feedback. Much appreciated!