WOW! You rolled out v19 right away. Brave soul.
Since I don't have it installed yet, I can't say, but let's follow up with some questions.
Is this a part or assembly?
Can you turn on the PMI toolbar (View->Toolbars->PMI)?
Based on what I have read, PMI seems to be an application similar to exploded views, simplified part, or rendering. Have you switched to the PMI application in order to get the PMI branch in the Edge Bar?
--Scott
For some pleasure reading, try FAQ731-376