That tends to be why i pre-shoot barrels and such before going into major combat areas with them.
The one area where you need to plant the false recon data is notorious for it and i 100% bet the developers knew exactly what they were doing when they put that barrel there.
While it does suck it’s one of the few things to keep people on their toes as far as difficulty goes. I kind of wish the environment would be a much grater factor in your average mission.