When the Waverider lands in 1960, it lands in an empty space with leaves on the ground. When it takes off, there are several ducks in the area, but a following shot shows the leaves scattering with no ducks anywhere to be seen.
Sarah and Shiera are playing the Modern Game of life in 1958. while the original game of Life was released in 1860, the board they are using was not introduced until 1960 and is noted as the 100th anniversary edition.
One of Ray's physics students in 1960 is revealed to be the father of Bill Gates, William Gates Sr. William Gates Sr. graduated from the University of Washington in 1950, and was a law student, not a physicist. For him to be at any university at this time as a student would be anachronistic.
The list of names that Gideon shows in Arabic is written from left to right, while Arabic is written from right to left. Moreover the name in Arabic was "Sara Lance" not "Ta-er Al-Sahfer" as Gideon showed in English.