I cannot speak for other classes right now, since my knowledge of how every other class works is very outdated, but I can speak for awakening dk specifically.

It is known that jump height breaks awakening dk, as seen with meme builds and jump height stones, although it's never really sought much attention since it is up to the player if they build or pop jump height stats.

With the introduction of scholar, however, it's obviously a bit more complicated now.

Ally Scholars as well as enemy Scholars can provide you the jump height buff, which is super noticable and completely breaks Shattering darkness and Trap of vedir, unless you use specific skills in combination, you will go into falling animation at the end of the casts... I am unsure if breaking class kits is an intentional part of Scholar's "design" or if its another part of the failings of PA's game engine with dealing with the Z axis... something they have mentioned is extremely hard/impossible to fix.

Idk how else to provide feedback to PA, other than this post, hopefully they can look into falling animation in general, its a stupid mechanic in its own right and frustrating to deal with (they fixed it for awakening drakania a while back, so perhaps its possible?).

TL;DR: Remove falling animations from skills that scale with jump height... because scholar

EDIT: just realised there's another post about this -> https://www.naeu.playblackdesert.com/en-US/Forum/ForumTopic/Detail?_topicNo=57362&_categoryNo=57&_searchType=1&_sortType=6&_orderType=False&_bigPageNo=1&_pageNo=1&_pageSize=25&_tagList=107&_searchDay=0&_forumListType=0

Please dont forget Air strike / balanced strike and nocturne in that regard, as all of these can have the same falling animation interaction when buffed with jump height!

I omitted these skills, since jump height doesn't particularly break them from the get-go, but of course, they do scale with jump height regardless and can create problems on hills.