Guild Wars 2

If your character is facing directly into the camera, ie, looking directly at you, pressing the W (forward by default) causes it to run, not away, but towards the direction it is looking. This does not happen every time by any means, but it when it does, it can leave you with your heart in your mouth, especially next to ledges etc.

This is not entirely new. Noticed this behavior months back, but paid it no heed thinking it must be there for a purpose, but seems to be becoming more apparent.

I think it depends on if the camera was panned holding left mouse or right mouse button.
Have a little play again and you’ll see what I mean.