Here's the weird seam-thing in a gif!
It's hard to notice in the gif, (much easier to see ingame since it's larger), but there's a small "wiggling" effect where I assume the pattern repeats itself. It's hardly noticeable, but I just thought it was something to note.
As for the bug, the green blocks were indeed poppable and had the glowing effect. I can't recall if I messed with that area beforehand, but I assume I didn't move a green block there myself, (otherwise I would have popped it as soon as I did). I tried to recreate it as best as I can in order to recreate the issue, but so far it seems to work as how it's intended. Hopefully you can find out what's wrong!