At the beginning where the bartender has to swear to accept the regulations, he raises his hand with a brown leather strap on his right wrist. The strap disappears and reappears several times in subsequent shots.

When the bartender first fills the customer's beer glass, the beer seems to overfill and ready to spill out of the glass. However, the scene is cut-off immediately before that happens and the bartender is seen to refill the glass a second time properly, without the beer overfilling it.

At around 6:30 the strap on the Agent's left hand appears and disappears between shots.

When the Unmarried Mother walks toward the bar, the barkeep raises the movable part of it for his colleague to go through. The shot ends with him right in the middle of the bar, and in the next shot he is walking towards the bar again.

(at around 1h 11 mins) Mr. Robertson reaches for his lighter in his jacket's right pocket with his right hand while walking away from the camera, turns around and in the next shot he is lighting up his cigarette with the lighter in his left hand.

(at around 1h 24 mins) We see wrong day of the week in the Suspect's Routine. March 3, 1975 is Monday.

When they are talking in the bar, the Guinness advert mirror has the new post 2005 logo, with the harp facing backwards. From 1759 to 2005 the harp faced the other way, they are in a bar mid 1970s.

The movie is set in an alternative universe where space travel in the 1960s was more advanced than in our world, and where New York was subject to a wave of terror attacks in the 1970s. There are agents patrolling the timeline, and may have left something behind. Most apparent anachronisms and factual errors can be excused by this notion.

A newspaper clipping shown contains an article starting with the explanation for the moniker of "The Fizzle Bomber" but the newspaper article continues with repetitive blocks of text.

The lettering on the closeup of the "Display Timer" PCB around 1:20:00 is mirror reversed. If you read it, you can tell that it's actually an Arduino Pro Mini.

If you look closely at the newspaper article text in the beginning of the movie, the paragraphs are the same for each article, only the headlines changes.

The barkeep moves the USFF Coordinates Transformer Field Kit to the table and declares that it weighs approx 6Kgs, fully charged yet when he moves it, it appears to be much less massive.

The newspaper photo from the Germany disaster is actually Chernobyl nuclear power plant disaster. It's also the same picture shown at the very beginning is labeled "Ohio 1960"

At about 5:00 a doctor says to the burned Agent, "The scars have begun to heal nicely". Scars are tissue that has already healed, so it's highly unlikely a doctor would make such a comment.

On the invoice for the bomb parts, supposedly bought in New York, there are lines for vendor VAT number and buyer VAT number. There is no VAT in New York; they have sales tax. Also "refrigerator" is misspelled as "refregerator"; and both "transistors" and "resistors" are misspelled.