15-rc: Block Editors: Unable to create a Settings model in the flow of setting up a new block

[sofietoft]

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

15.0.0-rc3

Bug summary

I wanted to set up some blocks (using the Block Grid) for testing, but run into what looks like a bug when attempting to create a Settings model for the block.

Specifics

No response

Steps to reproduce

1. Create new data type
2. Add the Block Grid property
3. Add new block by creating a new one
4. Add a settings model by creating a new one

When you get to this point, it will ask you to stay or discard changes. If you click "Discard changes" something weird happens - it closes some of the editors behind what's open in the infinite editing mode.

block-grid-bug.mp4

Expected result / actual result

No response

[nielslyngsoe]

This PR umbraco/Umbraco.CMS.Backoffice#2518
Fixes the root cause of this, but it results in the 'Create New Element Type' action going away. So this issue is still relevant, but less of an issue now. More of a feature request.

I have created a task for this in our next sprint.