Godot Version
Godot version 4.3
Question
Earlier today I decided to update to version 4.3, and now I can’t add new animation keyframes in animation player for any of my game objects that were created prior to the update. For sprite2D, I can’t even change what frame it is on in the editor.
It seems like I can create new objects and adjust the sprite2D frame, add keyframes, etc., but it will be a LOT of work to recreate all of my old objects. Is there any workaround to this? Other than telling me that I shouldn’t have updated mid-project?
Small update: after playing around with things, I’ve discovered that after deleting (and then undoing that deletion) of the associated animation tree, it’ll let me do things like change frames. At one point, something popped up advising me that it is a “Dummy Player”:

When I click on that, this is what it says:
"Some AnimationPlayerEditor’s options are disabled since this is the dummy AnimationPlayer for preview.
The dummy player is forced active, non-deterministic and doesn’t have the root motion track. Furthermore, the original node is inactive temporary."