The photo sequences in Mapillary show the path taken and registered by the camera. This is useful to reproduce the same way the person who took the photos; however, if photos were taken in different journeys, but uploaded at the same time, it looks like a big jump in the sequence and a long straight line.
One example is the following: https://www.mapillary.com/app/user/ccossio?lat=1.883794516108722&lng=-76.29431367833219&z=6.236052121160821&pKey=Lyar4Sohc3l4gWs4NeYfyw&focus=map
The photographer took a photo in Sao Paulo, Brazil, and another in San Luis Potosi, Mexico. For these two photos, there is a straight line that crosses many countries, where no photos were taken.
I think Mapillary should detect this event, and do not show the line. For example, if the date between two photos is too distant, or if the difference between the coordinates of the photos is bigger than 100 meters. In these cases, Mapillary should cut the sequence.