Sections have started to bug for me. After creating a section and trying to edit it I can no longer see the content field where I actually put the text and images.
Things I see: “Section label” to set a name for the section, “Add media” button, “Settings” (everything is visible here) and “Content” on the left hand side, plus the two buttons in the bottom right to either save changes or cancel.
This bug is both for pages and posts. All themes, wordpress, widgets and plugins are up to date.