Different run animations not functioning properly

Hello, the heavier legends in the game have (or should have) a slightly different run animation to those that are smaller. These legends of course are gibraltar, newcastle and caustic and these animations go a long way in making you feel larger and in my opinion make the game more enjoyable, however i have noticed that these run animations are not functioning properly. I have been out of the loop for a little while so if they have been removed or altered then i was unaware, but randomly my character will go from doing the normal run animation to the heavier one with no apparent cause which leads me to believe it has been bugged somehow. I have found no consistent way to make my character do either set of animations but the majority of the time the normal run animations are playing on the heavier characters which just feels kind of weird? It would go a long way fixing something small like this to keep the immersion alive and generally keep the smaller details in apex alive.