When Josh goes back to the hotel room to steal Jake's money from under the bed, Josh is wearing a shirt. Later on, Jake returns to the room and rewinds the video camera to view recorded video of Josh stealing his money from under the bed. In the video footage, Josh is wearing a huge winter coat instead of just the shirt he was wearing when he actually stole the money a little while earlier.
While in the hotel at St Petersburg, when Josh is lying on the bed and having some snacks he puts the bag of crisps on the nearby table and try to remove the crumbs from the sheets. Then in the next shot, from the reflexion of the mirror, he is leaving his bed with the bag of crisps in his hand.