When they are at Vienna train station about to leave for Prague, Audrey and Morgan panic about being caught by the authorities during passport checks at the border. There are no border checks when travelling between Austria and the Czech Republic, as both countries are in the Schengen Area.
When the biker is flung off the car into the intersection, he stands briefly only to be struck by a bus. The bus clears the intersection and leaves the frame. As the actresses are running to the biker, the bus has returned to the middle of the intersection.
In one scene, five black CIA cars are travelling along an empty road towards the camera. When we cut back to the road, they are travelling away from the camera, but clearly just driving back they way they had come (i.e. in the opposite direction).
At Wien HbF (Vienna Main Train Station), the characters talk about needing new passports to travel to Prague. Both Austria and Czechia are members of the Schengen Accords and as such there are no border controls (including passport checks) between the countries.
At Vienna station, when looking at the trains to the Czech Republic, there are numerous errors. In the case of the train to Prague, the destination is shown as 'Prague Bahnhof'. In German, it should be 'Prag Bahnhof'. Similarly, another destination is shown as 'Czech Budejovice' - this should be 'Ceske Budejovice' (in Czech). The 'train' to Usti nad Labem stops at 2 bus stations (Znojmo autobusove and Florenc, Prague) rather than at train stations. Litomerice horni (nadrazi) is a tiny station on a branch line and would never have a direct connection to Vienna. Moreover, all these trains supposedly leave within minutes of each other.
Around 30 minutes into the movie, during the car chase scene, there is a moving silver car however the angle changes to show this car being hit and it is clearly visible that there is no one driving the car, or indeed anyone actually in the car.