I believe that whenever any mod tries to scale you to a diffrent height that alex's caves has a slight issue and doesnt allow this putting you at the normal height but if your actually taller than the 2 blocks if you crouch you grow which is obviously strange. I have compilied some images from diffrent people including my own.
Credits to tsunabaki for the white dragon image fyi
Another github link to the other side of the issue: DragonSurvivalTeam/DragonSurvival#444




Very clearly i am taller but my camera is just stuck at 2 blocks the guy who owns the server i play on doesnt believe its alex's caves so i just need to prove that to him.