Near the beginning, the chemist tightens a cuff around the arm of the Brazilian as he drugs him. A few moments later, without having a moment to remove the cuff, the chemist begins to unbuckle the Brazilian's pants and the cuff is no longer on the arm.
When Robert escapes Koba's mansion, and Koba later runs into him, causing Robert's car to overturn, none of the airbags in Robert's car deploy.