MatheusMDX

Bisecting points to #93502 as the culprit, @TokageItLab 

I also can reproduce this issue in v4.4.dev3.official [f4af8201b] and latest master v4.4.dev.custom_build [4c4e67334], @TokageItLab can you double check from your end? https://github.com/user-attachments/assets/5f2c3bb1-82de-45a9-905b-0fdc563ec9e3

I wasn't able to reproduce this issue. Godot v4.3.stable - Windows 10.0.19045 - Vulkan (Mobile) - dedicated AMD Radeon RX 580 2048SP (Advanced Micro Devices, Inc.; 31.0.21916.2) - AMD Ryzen...

I think this is a duplicate of #96101

1° This is a place for technical problems related to the engine (aka bugs), not for common questions about how to do stuff, use the official [forum](https://forum.godotengine.org/c/help/6) and [reddit](https://www.reddit.com/r/godot/) for...

Please upload some images from what is happening and your godot project to help us pinpoint your problem.

> But not sure what is exactly going wrong here or if the use is valid Probably what's happening here is like delete an internal node, i took a look...

No, the error is different and the backtrace the same AThousandShips get: 

Just to make sure, can you check this link https://godotengine.org/article/migrating-animations-from-godot-4-0-to-4-3/ to see if your case is about any of these changes, i saw lot of issues related to this changes...

Same as #97248, duplicate of #96081. This issue is already solved in 4.4 dev2.