Genji's dash in Overwatch Classic is indeed bugged.
Idk why people keep suggesting that Genji's dash used to have a camera lock back in the days, when it's literally not true.
Here's a few clips from Necros for reference: - https://youtu.be/OG6o25q9WZw - https://youtu.be/i6gYTJab9sg
These clips were uploaded prior to Moth Meta (September 2017) mind you, yet it is impossible to replicate what he is doing in the current event.