Sculpting - only vertical Strokes seem to work I am trying to model an elephant with horizontal strokes. However whenever I try, it doesn't work at all. Only vertical strokes seem to work. 

video of the problem is here: https://www.reddit.com/r/blender/comments/gfzo3q/modelling_is_only_allowing_vertical_strokes/
Enable Dynamic Topology Horizontal probably isn't working because you do not have enough vertices to work around.