Then put ramps on top of those corners.
why? the cliffs are supposed to be sharp and blocky. i shouldn't have to sacrifice build design to work around some stupid glitch. do you suggest i do this to every wall?
For the old terrain maps, I made a playertype that couldn't climb straight up steep hills. That way, people would have to use the paths the designer of the map made. You'd actually have to follow roads. I didn't have to put in invisible walls preventing people from climbing up a mountain, because one, the playertype disallowed it, and two, you couldn't corner jump up them.
If people liked being able to climb over the mountain, they could use the default playertype in their own server and they could climb mountains fine. For me, who didn't like it, I made my playertype and my design worked fine. Here, I cannot do that. I cannot make a playertype that can't cornerjump, or I at least have no way of knowing how. A simple canCornerJump pref on playertypes or minigames would be enough for me, that way people who like it for challenges can keep it, and people who don't like it being abused everywhere else can get rid of it.
It doesn't have to be one or the other (common stupid forum mentality), there can be both and it's possible to satisfy both sides. Not every update or improvement requires a sacrifice.