for us that play PC it not hard to check
test a player action skill with no items equipped that boost + action skill cooldown, with what ever you pointed into guardian rank hunter tree, in my case show -12%. shut down game completely. -12% on a 2 minute CD is not reducing the 2 minute CD like one would think. cut and paste your player SAV file and profile to another folder. guardian ranks are player shared and saved in profile.
start game, it creates a new profile, quit game completely, copy in same player . new profile will have 0 points in any guardian tree, i show +0 percent action skill cooldown rate.
-12% on a 2 minute CD is not reducing the 2 minute CD like one would think.
all items in Borderlands 3 that have a action skill modifier in the game are a + positive percent modifier, it makes the cooldown faster. should be a + bonus not a - bonus, hunter tree bonus is wrong, showing a - negative percent modifier at -12% is hindering and not a bonus