Why does my OUT_BOUNCE Tween produce a weird curve?

You picked TRANS_LINEAR + EASE_BOUNCE_OUT. Bounce belongs to TRANS_BOUNCE; pair with EASE_OUT for arrival-bounce. Mismatched trans+ease doesn't produce the named curve.

How are trans and ease combined?

trans = function family (Linear, Sine, Quad, Bounce, Elastic). ease = direction (In, Out, InOut, OutIn). Both required; engine multiplies them.

Custom curve via Curve resource?

For shapes outside the presets, set tween_method with a Callable using a Curve sampling per t. Lets you author exact shape in editor.

Fix: Godot Tween OUT_BOUNCE Wrong Shape

Quick answer: Use set_trans(Tween.TRANS_BOUNCE).set_ease(Tween.EASE_OUT). Both are required.

UI element should bounce-in. Trans set to LINEAR; only ease changed. Result is linear with weird endpoint, not a bounce.

The Fix

var tw = create_tween()
tw.set_trans(Tween.TRANS_BOUNCE)
tw.set_ease(Tween.EASE_OUT)
tw.tween_property(node, "position", target, 0.5)

TRANS_BOUNCE is the family; EASE_OUT picks the direction. Combined they produce the canonical “ball bouncing to rest” arrival.

Verifying

Animation bounces on arrival. Without TRANS_BOUNCE: linear or eased curve, not bounce.

“Trans family. Ease direction. Bounce.”

Related Issues

For tween parallel, see parallel. For tween callback, see callback.

Trans + ease. Bounce.