I have this project since 3x and moving up to 4x has seen some weird quirks. The first one I noticed was when you keyframe a frame of a AnimatedSprite2D in the AnimationPlayer, it used to automatically add the next frame count ready, and when I switched to 4x, this was no longer the case for me and had to do it manual ever since.
Now, when I scrub the timeline backwards, it still display the animation moving forward. It is very difficult to preview and tweak animations because of this. Is this how things are now or is there a way to change this in the options? Because this definitely a bug, right? Hope anyone can give a solution to this because it's driving me stressed and nuts.