I ran into this issue as well. I found that the issue stems from a difference in the name_list_format links defined in the Name List Format configuration entity class and the name.routing.yml.
The attached patch resolves this.
I ran into this issue as well. I found that the issue stems from a difference in the name_list_format links defined in the Name List Format configuration entity class and the name.routing.yml.
The attached patch resolves this.