margin top

Any instance of margin top that is being used on the settings forms doesn't add the rule properly to the module generated css file. Instead we get something like the following:

.blah {
  margin-top:%teaser_display_dimensions_margin-top%px;
}

i.e. something is preventing the rule value from being inserted in place of the %blah% placeholder. I can confirm this is taking place on multiple settings forms so that means it has to come from somewhere in form_presets.inc file.