Hello and welcome to OpenStreetMap!
I think that this edit might have introduced a gap in the Saxon_Shore_Way relation 8864.  I've filled it in now:
https://www.openstreetmap.org/relation/8864#map=18/51.384666/0.523991
It might also be worth checking the other bus route relations - https://www.openstreetmap.org/way/1359466727 is in fewer than the way to the south.
Best Regards,
Andy

