Whenever I'm working on commands if I go near too many repeating blocks, my FPS drops which as I'd expected since it's running a lot, but the actual problem is that trying to turn them off will never work because they don't load the command or allow me to change the block data (from Always Active to Needs Redstone) because it's stuck on an "empty command" sort of thing. It acts as if I've never modified the command, but I have and other commands with text in them stop working if I get too close to the repeating ones.

The first image is of the command being bugged, the second image is the same command but moved away, you can see that I'm in front of the wall of commands yet the command loads, but if I turn to the wall and open it, the command stops loading.