Sometimes when the renderer is drawing ellipses, they will stop rendering until a rect is drawn.
Present in deda145a94cf
I see this issue as well on my original iPad running iOS 5 and the latest Codea. Ellipses *only* draw after I've drawn a rect.
I believe this is fixed in 1.2.7 - marking as resolved for now. Please let us know if it is still an issue.