If a Start Business Process action is added to a Listbuilder with a context type of section field, the section field drop-down is blank.
We are currently evaluating this issue for a fix in a future service pack.
Steps to Duplicate
1) Find or create a Listbuilder section. 2) Add a Start Business Process action 3) Choose a context type of Sectionfield > Save 4) Edit the action > Observe that the sectionfield drop-down list is empty