This makes it impossible to set the scene in such way, that ImageTarget would be projected on X-Z axis with the camera above with the mentioned World Center Mode - CAMERA mode.

To reproduce:
1. Set up a Vuforia project with AR camera and ImageTarget
2. Check out the scene - ImageTarget on X-Z axis, camera has X rotation of 90
3. Enter Play mode, make ImageTarget visible to camera
4. Observe the plane being projected on X-Y plane, making things like gravity function differently due to changed transform values

Expected: World Center Mode does not ignore camera's Transform
Actual: World Center Mode ignores camera's Transform by resetting every field (check .gif attached)

Reproduced in: 2017.2.0p4, 2017.3.0f1, 2018.1.0a7

Note1: this could be solved by making editor not reset ARCamera's rotation when using World Center Mode - CAMERA
Note2: even though it's possible to change the gravity's behavior, not resetting ARCamera's rotation would make it easier to develop