Continuity mistake: Coulson has just entered the supermarket and is holding 2 donut packages in each hand. Watch his left thumb. In the close-up shot it is on the 'D'. In the next shot, it is below the letter on the red band on the plastic wrap. (00:00:55)
Other mistake: When the captive begins her escape, she kicks the bed through the orange portal offscreen, but the portal only starts about a foot off the ground, so the bed would have hit the wall, rather than have gone through the portal.