I have a node and its translation.
I open the translation for edition and click on the "delete" equivalent in the concerned language, I get a warning telling me that doing so cannot be undone... So I do it. The result is the deletion of the source node ( and not the translation )
It creates quite a confusion as it generates an error when I try to create the source (english) version.
From my point of view, it should delete the translation and not the source node or not show the delete button.