Command blocks not executing while triggered by a very fast clock

In the setup like in the image (I'm facing east) or in the .schematic the command blocks in the middle row facing east and west aren't executing their command. I tried it at different locations and directions in the world, but nowhere it worked.
Additionally, when triggering these commands in the chat they execute as they should. Otherwise as I tried it with a different command, it also worked as it should. (not /execute but /say)
Also as I looked into MCEdit I noticed that every command block has one tile tick at its position but exactly these six command blocks, which don't execute, don't have one.

If it is a bug in block updates or in commands or the selector I don't know.

The commands are (ordered by ascending x or z coordinate):
facing north:

execute @p[rym=135,ry=161,rxm=-10,rx=15] ~ ~ ~ say ~-1 ~1 ~-2 
execute @p[rym=-198,ry=-163,rxm=-14,rx=21] ~ ~ ~ say ~ ~1 ~-2 
execute @p[rym=-162,ry=-136,rxm=-10,rx=15] ~ ~ ~ say ~1 ~1 ~-2 

facing east (not working):

execute @p[rym=-135,ry=-109,rxm=-10,rx=15] ~ ~ ~ say ~2 ~1 ~-1
execute @p[rym=-108,ry=-73,rxm=-14,rx=21] ~ ~ ~ say ~2 ~1 ~
execute @p[rym=-72,ry=-46,rxm=-10,rx=15] ~ ~ ~ say ~2 ~1 ~1

facing south:

execute @p[rym=18,ry=44,rxm=-10,rx=15] ~ ~ ~ say ~-1 ~1 ~2 
execute @p[rym=-18,ry=17,rxm=-14,rx=21] ~ ~ ~ say ~ ~1 ~2 
execute @p[rym=-45,ry=-19,rxm=-10,rx=15] ~ ~ ~ say ~1 ~1 ~2 

facing west (not working):

execute @p[rym=108,ry=134,rxm=-10,rx=15] ~ ~ ~ say ~-2 ~1 ~-1
execute @p[rym=72,ry=107,rxm=-14,rx=21] ~ ~ ~ say ~-2 ~1 ~
execute @p[rym=45,ry=71,rxm=-10,rx=15] ~ ~ ~ say ~-2 ~1 ~1