When you are working in the wireframe view, you have the choice between the Classic Divi Builder and the New Divi Builder. Here is what the Classic Divi Builder looks like. For now, this is the default interface.

When you switch over to the New Divi Builder, the wireframe editing environment looks like this:

When you drag and drop one of these elements in wireframe editing mode, you may get an error pop-up box. This suggests that Voices/Divi thinks you’re performing split testing.