[Tinman]

the set-camera-facing-object zooms into the skybox during turning the camera since revision 4796 (an example for this is in the EBW campaign)
in builds older than revision 4796 the camera is turning without zooming into the background; that version is better in my opinion.

bug or intentionally? if it's a bug, tell me and i mantis it

[WMCoolmon]

It's not intentional. The most recent versions of the code will interpolate all 9 matrix values directly while older versions stored the interpolated values as three angles and derived the matrix from those.