Holding Alt To Lock Value In Keyframes Is Not Working

Pressing Alt when using keyframes with curves to move only a keyframe’s time still messes up the value making it essentially useless. When I’m moving the keyframe in this demo I’m holding down the Alt key which looks like it’s locking down the value in the keyframe timeline while I’m changing the time but you can see that the value changed anyway when I seek to that keyframe and check the parameters.