Here's an example of the refs today. That dude running off the field right before the kneel down play. That's 12 men in the huddle which is a penalty. They let him run off. Throw the flag. The coach WANTS you to throw that flag.
In his defense when guys are split out the ask the line judge if they are on and adjust if they aren't. Howard was clearly pointing and asking and didn't get the feedback to indicate he was off, the guy threw the flag though.