Sticky behavior breaks in editor with parent overflow: auto

[makhnatkin]

Problem Statement

When the editor is placed inside a parent container with overflow: auto, the condition at this line (refPageOffset <= stickyOffset) fails to trigger, causing the sticky header functionality to stop working as expected.

Possible Solutions

1. Utilizing Intersection Observer API:
   We can explore using the Intersection Observer API to detect when elements enter or exit the viewport. This method would involve observing multiple elements, including those that might dynamically change. However, elements with position: sticky may not trigger the observer effectively due to their inherent visibility within the viewport.

2. Direct Position Comparison:
   A simpler approach might involve directly comparing the initial top position of the ref component with the window scroll position or the scroll position of the nearest parent which has overflow: auto or window.

Key Considerations

• Handling Dynamic DOM Changes: It's crucial to account for elements that might be added to the DOM at runtime, as these could disrupt the layout and the sticky behavior.
• Flexible Offset Management: Introducing a CSS variable for the sticky offset allows for more fine-tuned control across different layouts and components, enhancing maintainability and adaptability in varied environments.

[makhnatkin]

We should also check the behavior in the Popup