Hi there,
I am preparing a presentation, and I am using the feature documented here:
https://otfried.github.io/ipe/70_presentations.html#changing-symbolic-values-inside-a-view
However, the change of mark shape is not reflected into the PDF, as the enclosed screenshot shows:

Indeed, the mark pointed by the "yellow box" is a disk in the ipe interface, but at the corresponding place in the PDF it has remained a square.