No they are not bugs, they’ve stated the changes to combat movement (as spoken about in the OP of this thread) are intentional to address a bug. The video link I was replying to also explicitly makes this clear. Funcom have an official post about it:
Character rotation when swinging melee weapons
We’ve seen some discussion about a change in Chapter 3 where, essentially, you need to press a movement input while attacking to rotate in the direction of your cursor. The changes seen in Chapter 3, as I understand it, are intended changes to address a bug - those accustomed to the system from Chapter 2 can turn off Controller Style Movement and Rotatable Stationary Camera under the ‘Gameplay’ tab in Settings to get back to a similar feel, although this causes your character to always rotate automatically with your camera. Your mileage may vary. Naturally, we’ll keep an eye on feedback about this change.