Another huge bug to add to this list is druid movement speeds, which are being calculated incorrectly.
Travel form and minor speed should stack multiplicatively, along with the PVP set bonus which is being added soon. Currently, we see a flat 140% movement speed while in cheetah even with minor speed which is incorrect.
the bonus should be 1.4*1.08 = 151.2% movement speed
With the PVP set bonus, this would be 1.4 * 1.08 * 1.15 = 173.8% which is faster than people on normal mounts. This is working properly
From Wowiki:
Druid and Shaman travel forms also exhibit this multiplicative stacking; the 15% increase they receive from the [PvP-Rare] set yielding a total SUSTAINED speed of 161%.