I'm checking, I'll report the situation.
When I checked the error, I could not produce the problem, the relevant screenshots are available below. it is my email gizem.kurt@volosoft.com I can help.
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I will check and get back to you
I created a Blazor project, followed the steps, but could not produce the error. If you are using a different step, please let me know.
We are unable to reproduce the error. If you let us know the project you got an error on at support@abp.io, we can review it.
I could not produce the error. If you have applied a different procedure, please indicate.
I cannot produce the error, if you are using a different procedure, please inform me.
We will check and get back to you
Do you mean; when editing an existing n-n property, you don't see the saved items?
We will check and we will get back to you.