Ok, so answering my own previous query and quoting OP...
Kheldian nova form are exempt from travel suppression, as they always have been, confirmed tested in game, just now. What you likely are experiencing is the known issue with dark nova detonation animation, there's an extra .8 seconds that you remain locked in place, this is a known issue where the animation needs to be revised.
All the other powers, fire, right after animation you're at full speed ramp, where all other travel powers are throttled to sprint speed for 3ish seconds and then abruptly hit speed.
Nova form, due to how the shape change works, is exempt from this, as it always has been.
Nothing to see here, people.