[BUG] Content Item duplicates when saving twice after create - Happens when `Enable list view` = `true`

[r-Larch]

Which Umbraco version are you using? (Please write the exact version, example: 10.1.0)

13.2.2 - also happens in 13.1.1

Bug summary

When creating a child content item in a parent where Enable list view = true the item will be duplicated on second Save (not save and publish)

Specifics

Happens in infinite editor.

Steps to reproduce

• Have a content Item with Vary by culture and Enable list view = true.
• Add a child content item using Create {Child Page} button. The child is also Vary by culture.
• Enter a name for the new item
• Hit Save - not save and publish
• Make another change to the item.
• Hit Save again. -> You will see name has changed to Name (1) and the item exists twice in the list.

Expected result / actual result

The item will not be duplicated.

Details

It looks like a BUG in the backend.

First save: (node gets an id)

Second Save: (the node id gets sent to the backend)

Second Save Server response: (the backend responds with a new id!)

[github-actions[bot]]

Hi there @r-Larch!

Firstly, a big thank you for raising this issue. Every piece of feedback we receive helps us to make Umbraco better.

We really appreciate your patience while we wait for our team to have a look at this but we wanted to let you know that we see this and share with you the plan for what comes next.

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[Zeegaan]

I sadly cannot reproduce this, below is a GIF of me trying to reproduce, am I doing anything wrong here ? 🤔

[ealse]

@Zeegaan We got the same problem, but you have to use the infinite editor. We have had a similar problem in the past and back then I fixed it in this issue: https://github.com/umbraco/Umbraco-CMS/pull/12874

We are now upgraded from Umbraco version 10.4.0 to 13.3.0 and the problem is back again.

It looks like the problem is the "action" value in the PostSave payload. The id exists but the action is still "action": "saveNew"

Here is an example with a new umbraco 13.3.0 project: https://github.com/umbraco/Umbraco-CMS/assets/50272817/e316f2e3-0e98-41f8-815f-bd1641ea427d