When teleporting, you can bring up another window such as the skill tree and put your cursor over top of that window by holding before you get to the window and it will allow you to teleport a longer distance than should be possible. This bug existed in LOD but wasn’t discovered until later in the 2010s. It’s exploited in PvP to teleport much longer distances than normal.
here’s a video here explaining: https://www.youtube.com/watch?v=BspPlSZnjZI
glitch still exists in D2:R. Why hasn’t it been fixed yet?