Quick answer: Use the deferred call mode on the method track, or read bone transforms a frame later, so the pose is applied before your callback runs.

Your method track spawns an effect at a hand bone but it appears at last frame's position. The call fires before the current pose is applied. Switching the track to deferred call mode runs it after the pose update.

How to fix it

1. Set the track to deferred

In the method-call track key, set the call mode to Deferred so the method runs after the animation pose for that frame has been applied to the skeleton.

2. Read transforms after the update

If you need up-to-date bone positions, query them in _process/_physics_process after AnimationPlayer has advanced, not inside an immediate-mode track call.

3. Force a skeleton update if needed

When you must act immediately, call the skeleton's update so global bone transforms reflect the current pose before your method reads them.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every Godot error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.

Reproduce it once with full context and the fix writes itself. The hunt is the expensive part.