well you see prior to version 1.06 fireteam regenerated their stamina while in air but as you know jumping and running is faster this caused every FT class to just be faster than all versions of the predator regardless of predator class or perk set up while they had their knives out
so it was changed so if predator was in 2nd wind or just running cause his hp was low FT actually has to track via sound and blood spots instead of literally keeping up with pred and gaining on him cause they were all Usain bolt in disguise
this is not a bug this was a deliberate balance change
now you might say it’s not fair that pred can regen his stam whlie in the air and FT can’t but you see scouts with movespeed perk can still outrun every version of the predator unless they take big leaps so therefore preds still need this to prevent us from being the hunted