a weird thing happened today when i was working with automation curves in ableton live: normally, when i alt-click and drag a curve segment, i can bend it such that it curves toward one of the values of the points that it connects, making a sharp corner at the other end. but somehow, i managed to do something with just alt-clicking and dragging that instead produced an s-shaped curve, that would curve toward both points and have a fixed center point halfway between the two both vertically and horizontally. i have no idea how to replicate it - i managed to do it three times today, but i wasn't able to pinpoint what i did differently, if anything! i googled for the situation, and intriguingly, all i found were people on reddit this happened to, just as baffled as i am, going back several years, and *no solution at all!*

it is very mysterious! people in the comments misunderstand a lot at first, because it's weird to describe, and there are other ways to arrive at these s-curves, but nothing in the manual describes how to access the functionality with just mouse/curve interaction, and no menus.

one person on reddit made a video: https://www.reddit.com/r/ableton/comments/kmacsh/how_did_i_create_this_s_automation_curve_accident/

if anyone has a clue how to replicate the behavior, drop me a line?