I have, what has been determined to be a bug, in my Powers>Combat Attributes>Movement>Flying Speed. Whenever I power on FLY or HOVER I appear to receive a -14.46 mph from Self Penalty on my miles per hour. GM_Sparky worked with me on this for a good half hour, ensuring that this was not caused by any buffs, Passive Powers or Accolades, by any Enhancements or Enhancement Sets, or by any active toggles or powers. We created a new build trained only far enough to get FLY unslotted, and it still happens. The penalty also randomly changes to -3.01 for a few seconds, then back to -14.46. This is unaffected by which zone or mission I may be on.
See screenshot