Issue Summary

When one expandable is nested inside another, the content doesn't display correctly when expanded.

This is reproducible on Data Center: (yes)

Steps to Reproduce

1. Add an expandable element inside another expandable.
2. Enter content for each expandable.
3. Save the page.

When viewing the page, first open the outer expandable, then open the inner expandable, the information will not fully be display.

Expected Results

Show full content when opening the expandable elements.

Actual Results

Data is being cut out when one expandable is nested inside another.

Workaround

Expand both expandable elements, then collapse and re-expand only the primary (first) expandable.