Apps: Dropdowns unresponsive to clicks outside iframe

Dropdowns inside apps do not close when you click anywhere outside the frame. The click never reaches the Sigma document, so the dropdown stays open and the app feels unresponsive.

Possible approaches:

• Cross-iframe event messaging so outside clicks are forwarded into the embed.

• Detect mouseleave on the iframe and signal the embed to dismiss open overlays.

This affects every Sigma-backed app in the platform, not one specific app.