[Bug] All segment groups are attached to the root node #13396

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• I had searched in the issues and found no similar issues.

Apache SkyWalking Component

UI (apache/skywalking-booster-ui)

What happened

In version 10.2.0, for a simple trace like "A calls B and C," the UI shows 5 nodes instead of the expected 3. The API correctly returns 3 spans, but it seems the frontend logic incorrectly attaches each segment group to the root, creating a broken tree.

What you expected to happen

I hope these detailed suggestions are helpful for locating and fixing the bug. I am willing to contribute or create a Pull Request if I can get some guidance from the team.

How to reproduce

The issue is reproducible in any scenario involving multiple segments.

Anything else

No response

Are you willing to submit a pull request to fix on your own?

• Yes I am willing to submit a pull request on my own!

Code of Conduct

• I agree to follow this project's Code of Conduct