Created attachment 328891 [details] [review]
Separators not correctly placed

What it should look like:
  Bold
----
/Size/
  x 0.5
  x 1.0

What it looks like:
  Bold
  /Size/
----
  x 0.5
  x 1.0

Created attachment 328896 [details]
what it looks like

Created attachment 328897 [details]
what it's supposed to look like

I'm not so sure about the 'supposed to'. 

The current look is intentional, at least. We place the label above the separator, treating it like an underline for the title, more or less.

It is certainly possible to change it, either to what you propose, or

--- Size ---

ie put the label in the middle of the separator.

I don't think there should be any indentation variation between the regular item labels and headings. All the labels should align. The separators will look good aligning as well, or strethings outside (being wider).

Oh and yes, I agree the section heading should be included within the group, ie in your case the separator being above it.

Pushed a fix