Using Blender 2.93.9. Inserting a keyframe by turning on the auto keying feature with location & rotation causes the previous frames. It's hard to describe, so I recorded a video:
A bone named "Bolt" has no movements between frames 22 to 27. After I changed the location of this bone in frame 29, it ruins frames 22 to 27.
I used Blender 2.7b to make animation for over five years, which never happened to me. This annoying thing always makes me find the wrong animated keyframes each time I insert a new frame and keep wasting my precious working time.
Does anyone have an idea how to fix this thing?