Ok, after testing, it still happened, but I figured it out. Apparently there is a "dominant" block, aka. the newest block placed, that takes over the brightness of the FS, and will always light up. So I had to copy the block, delete it, and paste it to make it the latest addition block. That became the "lit" FS. Saved it like 10 times to make me feel better, lol. Thank you though. May not have tried it if you didn't make me test that.