Diverges

(of lines or paths) To run apart; to separate; to tend into different directions.

(of interests, opinions, or anything else) To become different; to run apart; to separate; to tend into different directions.

"Both stories start out the same way, but they diverge halfway through."

(of a line or path) To separate, to tend into a different direction (from another line or path).

"The sidewalk runs next to the street for a few miles, then diverges from it and turns north."

(of an interest, opinion, or anything else) To become different, to separate (from another line or path).

"The software is pretty good, except for a few cases where its behavior diverges from user expectations."