Key icon doesn't autoincrement [AnimationPlayer]

Godot Version

4.2.1

Question

I’m trying to create an animation in an AnimationPlayer, using the animations of an AnimatedSprite2D.

In every tutorial, people select the AnimatedSprite2D node, then go to the animation tab on the bottom, and then start pressing the key icon that is next to the Frame property. Then, a new frame is created, the animation advances 1 step, and the Frame property is increased by 1. Therefore, by pressing multiple times on the icon, they get all of the frames imported into the AnimationPlayer animation.

My problem is, when i press the key icon, the frame property doesn’t go up. So i have to press the icon, then increase the current frame manually, then press the icon, etc. Is there anything wrong with my configuration? is this a bug?