At the end of the movie, during the soccer game when Jensen's niece is knocked down; Jensen runs onto the field and in the background you see the rest of the Losers leaving the bleachers towards the field. But when Cougar spots Jensen in the binoculars everyone is sitting down.
In the first meeting between Clay and Aisha, the bottle of liquor is clearly unopened, as evidenced by the fact that the liquor doesn't pour out when Aisha holds it sideways. Yet later when she throws it at Clay we see liquid flying out of it before it hits anything which could have broken it.
At the end, when Roque is shooting at Clay from the steps leading into the airplane, he runs out of ammo, but when it switches back to Clay running toward him, you can see a couple bullets hitting the shipping container behind him, indicating Roque is still firing.
In the shootout scene between Clay and his crew with Aisha in the red hotel room, the crew fires their weapons and the bullets hit the door wall and the mirror wall, but when Rogue and Clay walk into the bathroom, bullet holes are seen in the wall opposite of the bathtub where Aisha was hiding.
During Clay's fight with Aisha in the hotel room, flames start erupting, at ground level, all around the room, with no visible cause. In a room fire, flames will always rise upwards and then spread outwards. If the flames in a fire reach as low on the ground as shown in the scenes, the occupants would already be dead and the room would be an inferno.
In the shootout scene between Clay and his crew with Aisha in the red hotel room, Aisha kicks the bathroom door shut and then in the shot from the bedroom view of the bathroom, the door is ajar and then closes.
When the gang debates at the table after finding the hard drive, the second scene is altered, clearly visible because Aisha's band tattoo is suddenly on her right arm and Cougar's watch suddenly is on his left.
In the shoot out scene at the end they are supposed to be in Los Angeles, but when they are on the docks and the crane you can clearly see in the background the coast of harbor of San Juan, Puerto Rico.
During the shootout which takes place in Miami, several prominent buildings from the "Golden Mile" financial district in San Juan, Puerto Rico can be seen, most notably the Western Bank World Plaza and the Torre de Banco Popular.
In the beginning of the movie, when the helicopter with children on-board explodes and Clay and his groups throw their dog tags in the chopper wreckage, they should throw each of them in different places, not all of them together in one place to fake their death.
Near the beginning when Max, Wade, and the woman holding Max's umbrella are walking down the beach Max uses Wade's Colt XSE 1911(single action semi-auto) to shoot the woman for almost dropping the umbrella. After he fires the round the, hammer of the gun is decocked (hammer is down, resting on the pin). There is no decocker on a 1911 and he clearly doesn't it decock it. Once a round is fired the hammer is always back afterwards.
In the beginning of the movie, after designating the intended target with a laser, the team calls for an air strike to be executed. The executing aircraft can be clearly identified as a MiG-21. Not only would that be an odd weapon of choice for CIA operatives anyway, but the only country in the American hemisphere which operates this aircraft is Cuba.
The air strike is then executed by firing two missiles. Even though a Laser-Guided Bomb would be the more appropriate choice to take out a soft area target, both LGBs and LGMs are not available options for the MiG-21 platform. Last but not least, the MiG-21 does not have any of the sophisticated MFD instruments, as shown in the movies.
When Cougar is running across the shipment containers at the Port of Los Angeles to set up his sniper position, the neck of the cello case on his back with his sniper rifle is flopping around when he is running to leap and somersault from one container to the other, revealing that his long sniper rifle is not in it. He later pulls the rifle out already fully assembled so it can't be that it was disassembled inside the cello case.
When Wade takes off after the plane, and Aisha comes around a container, the tattoo on her right arm and bandage on the left switch places. This is obviously caused by the frame getting flipped because the ID number on the container is backwards.
During the raid on the car convoy, Roque shoots an explosive dart into one of the cars. When the dart is detonated, the car moves directly upwards from the explosion. The dart was low in the side of the car, so it should have moved off to one side. The only way it could have leaped vertically was if the explosives were directly underneath.
During the shootout at the port Pooch gets shot in both legs. For the rest of the shoot out he cannot even walk. Yet later when he is sneaking into the hospital to get to his pregnant wife he doesn't even limp or act like his legs are hurting in any way.
The scene where they steal the armored truck shows a device being shot onto the door to keep it shut. The arms of this device are made of aluminum or another type of silver metal. Later before they open the truck it is shown in the background and the arms appear to be pink or white in color. A few moments later when they pull the device off it looks normal again.
When the team decrypt the contents of the hard drive and display the unencrypted content it can be clearly seen that it is the source code of a website and has no relation to what they are discussing. Specifically it is the HTML source of the the trial page for the MathCode library, presumably the intention was to capture the code of the actual library rather than the HTML source.