Height not properly controlled when a pop-up contains collapsible/expandable elements

• Create a document with two multi-valued complex type (each complex type include 10 fields)
• Scaffold the default create view
• Add a collapsible/expandable element to group all the fields of each complex type
• Deploy your changes
• Click on the ADD button to add a new entry to one of the complex types
• Expand the elements

When they expand one of then the pop-up is resized automatically, but the Accept and Cancel buttons are not visible, the pop-up is too high.

See links with examples in private comments