US style light switches are visible which wouldn't be in Margerithe's house in Germany.
When you see the house of Margarethe Ziegler, they tried really hard to make it look like in Germany.
The traffic signs are correct, but if you wold try to ride on the bike path, you would ride into the ongoing traffic, since the path is on the wrong side of the road...
The white vest that Gus is wearing under his shirt is not a bullet resistant vest, it is white and extremely thin indicating it is a stab/spike resistant vest designed to deflect knifes and other sharp objects, it would do little to nothing to stop a bullet. Considering that his enemies are armed to the teeth with automatic rifles it would make more sense for him to wear a heavier bullet resistant vest.
In fact, this vest was tested by the cousins when Leonel shot the ammunition guy in the chest in third season of the original series, Breaking Bad, One Minute.
The John Deere 35G excavator on the construction site is too new. They were manufactured between 2013 and 2021.
In the scene where Cliff confronts Howard in the carpark, modern smartphone typing sounds are heard when Howard uses his phone.