Checklist

• I have updated to the latest available Home Assistant version.
• I have cleared the cache of my browser.
• I have tried a different browser to see if it is related to my browser.
• I have tried reproducing the issue in safe mode to rule out problems with unsupported custom resources.

Describe the issue you are experiencing

If you Copy / Paste a Sequence in a Script, the items inside it get pasted, but the Sequence action is lost and not created. If you try to Copy / Paste an empty Sequence, nothing gets pasted. If you hit duplicate instead, it does create it entirely. I assume this is because a Script is itself a Sequence, and somehow it's bugged?

Describe the behavior you expected

The Sequence action to be created with the Paste.

Steps to reproduce the issue

1. Create a Script
2. Create a Sequence
3. Copy it
4. Paste it

What version of Home Assistant Core has the issue?

2025.10.2

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue?

Google Chrome Version 141.0.7390.77

Which operating system are you using to run this browser?

Windows 11 24H2

State of relevant entities

Problem-relevant frontend configuration

JavaScript errors shown in your browser console/inspector

Additional information

I understand Scripts are Sequences themselves, but you still add a sub-Sequence...and also Duplicating it works.