Weirdness with mouse sensitivity while spectating

[Evelyz]

While spectating (in replays, while respawning, or holding a Function key in-game) the mouse sensitivity does not match the normal sensitivity while playing. When zoomed out in replays ("chase cam") it is affected by Zoom Sensitivity Ratio, but not in the normal "In-Eye" mode. In "In-Eye" mode, the sensitivity is roughly 0.5x the normal sensitivity, i.e. the mouse distance to spin the camera 360° is roughly doubled.