In the IHTSDO browser, Taxonomy tab, for either Inferred or Stated view right under Taxonomy in the Taxonomy pane, there is an option next to the view for Descendants Count that defaults to off but you can change it to on. However, this option isn’t shown in the SOLOR extension. Was that intentional?
2/27/18: Per message from Susan: Good catch. The SOLOR Extension browser might be running a different version of the browser software? Can you enter a JIRA with a screen shot of the feature that is missing for the SOLOR Browser?