The small template is not automatically applying to the Small Subrace for SROs. I looked at the .lst and it includes "Template:Small" so I can't really see why. I've worked around this by setting the size templates to Visible:Yes in the templates.lst file, and manually applying Small, which works, but the automatic size adjustment does not occur even with the templates visible.
Apologies, I realized after logging this it should be Data, not Code. Closing this and opening a new story in the right spot.
Opening JIRA Story under correct heading.