Sorry to hear that you are having troubles! I noticed similar behaviour in recent Unity versions when attaching the Visual Studio debugger to a paused game, but not when attaching the debugger before pressing the play button and pressing play afterwards. Admittedly, I suspected a problem on Unity's side and didn't yet investigate where exactly it originates from, as it finishes after about a minute and only occurred when attaching the debugger.
Did you attach the Visual Studio debugger, or did you just press play?
IndieDoroid :
What is the best way to ensure the runtime is 100% removed before reinstalling?
You just need to move the Spine
(and Spine Examples
) directory outside the Assets
directory, this removes the core spine-unity runtime.
For UPM packages (Spine URP Shaders, Timeline), you need to use the Unity Package Manager as usual and remove the spine-unity UPM packages using via the menu.
Please let us know if you gain any insights into what caused the issue, and whether removing the spine-unity runtime changes anything.