Edit related records when 'enable one-to-one attribute display' is enabled

When enabling the new option 'Enable One-to-One attribute Display' for a layer which has related records 

The attributes of the 1:1 relationship are shown as attributes in the Result Details. However, when editting this record I'm not able to edit these 1:1 related attributes.

When disabling 1:1 Display option I got all relationships as tabs in the related records section (even when there is no related record), I'm able to edit the related record.

I would like to be able to edit 1:1 related records shown in the result details equal to editting data of the parent layer.