A while back the cooldown of the trick skill Haste, was reduced to 50s, however, the haste applied by the tier one trickery specialization trait Flanking Strikes the cooldown remains at 60s. I feel like this was an overlooked change that needed to happen.
With that, the lack of synergy between this trait and the Deadly Arts grandmaster trait Improvisation has yet to be fixed, meaning the haste proc from flanking strikes still can’t be reset with trick skills, as it is intended to. Unless for some reason flanking strikes was meant to be the only skill activating trait that doesn’t receive benefit from improvisation cooldown resets.