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Copying and pasting behavior tree nodes reverses the order of any decorators on the node.
Found in 4.11.2 binary. Reproduced in 4.12 Preview 4 binary.
Regression?
Yes. This does not occur in 4.10.4 following the same repro steps.
1. Open the editor
2. Create a new Behavior Tree
3. Create a Sequence Node
4. Add a Blackboard Decorator & a Cooldown Decorator
5. Copy the Sequence Node (CTRL+C)
6. Paste the Sequence Node (CTRL+V)
Result: The Cooldown and Blackboard Decorators are in reverse position.
Expected: The position of the decorators would remain the same.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-31076 in the post.