If you run a command with the r argument in a selector in a different dimension, it should normally fail. However when using a number higher than the int limit (limit: 2147483647), it says that the command failed but it ran the command anyway. The same thing is for the argument rm but there it doesn't matter what number you choose and in which dimension you are.

Command:
/execute @e[type=ArmorStand] ~ ~ ~ /tellraw @a[r=2147483648] Test

Log:
[16:58:17] [Client thread/INFO]: [CHAT] Test
[16:58:17] [Client thread/INFO]: [CHAT] Failed to execute '/tellraw @a[r=2147483648] Test' as Armor Stand

How to reproduce:

1. Go in the Overworld and place an ArmorStand in the spawn chunks
2. Go in the End or Nether
3. Run this command /execute @e[type=ArmorStand] ~ ~ ~ /tellraw @a[r=2147483648] Test

or

Run this command /tellraw @a[rm=1] Test

You will recieve the /tellraw message but it also creates the error message.