In my SharePoint page, I've added a ListForm Web Part with following settings: Form Mode = New, List Name = name of the list, Content Type = Item. Sharepoint version is 2016 On-Prem. The Nintex Form is shown correctly, but when I click Save, it just refreshes the page without creating a new item.
When I choose new item from the list directly, it opens the Nintex Form and I can save the new item.
At the same site, I've a subsite which is doing the same and it works there.
Does anyone has an idea why a new item can't be created here?