That's awesome! Thank you so much for explaining it :D
I might make a similar tileset with just 47 tiles to see the difference better. If I do so, I'll post it here :)
By the way, could you clarify what dimensions is a single individual tile image? Is it 16x16?
Not sure if I did mention it, but they are 32x32. I believe they should scale without much issue, though I could always whip up a smaller version if anyone ever inquired. I've been a bit busy, but I have some time off soon. This conversation has been interesting to me, too. I'd like to see if I can pick through my work and find the spot where l had to convert up to the bigger tileset. If I do, I'll come back to this thread with the specific example that broke the blob tileset for me, and demonstrate how.