Yes, overflow: hidden can break position: sticky. This happens because a sticky element only sticks within the boundaries of its nearest scrollable ancestor. When an ancestor has overflow: hidden, it creates a new clipping and scrolling context that confines the sticky element’s behavior to that container.

Why It Happens

1
overflow: hidden establishes a new containing block for sticky elements, so the element can only stick within that box’s visible area.
2
Once the sticky element reaches the boundary of the ancestor with overflow: hidden, it gets clipped and stops being sticky.
3
This behavior ensures that sticky elements don’t overlap or escape their scrollable container.
4
To preserve sticky behavior, the parent element should have overflow: visible (or no overflow property set).

Example: Overflow hidden breaking sticky

Difficulty: 5/10

Topics: position: sticky, overflow handling, layout containment

Scenario Questions

0-2 years experience

1
You have a sidebar that should stay visible while scrolling using position: sticky, but its parent has overflow: hidden. What will happen and how would you fix it?
2
If you add overflow: hidden to a container that holds a sticky header, will the header still stick to the top of the viewport? Explain why.

2-5 years experience

1
We noticed that a sticky navigation bar stopped working after we added overflow: hidden to a wrapper div to hide scrollbars. Walk me through how you would diagnose and resolve the issue.
2
In a feature where a modal uses overflow: hidden on the body to prevent background scrolling, a sticky footer inside the modal no longer sticks. What are the underlying CSS rules causing this, and what alternatives could you consider?

5-8 years experience

1
Our design system includes a reusable Card component that uses position: sticky for a floating action button. Some consumers wrap the Card in a container with overflow: hidden for clipping. How would you design the component or guidelines to avoid sticky breaking in such cases?
2
When implementing infinite scrolling lists with sticky section headers, we sometimes need to clip overflow for performance. Discuss the trade‑offs of using overflow: hidden versus alternative approaches, and how you'd ensure sticky behavior remains reliable at scale.

8+ years experience

1
Across multiple teams, we plan to migrate from CSS‑only sticky headers to a JavaScript‑driven scroll‑spy solution because some legacy browsers and overflow‑hidden containers break sticky. How would you evaluate the impact, migration path, and long‑term maintenance considerations?
2
If a large web app uses many nested scroll containers with overflow: hidden, and sticky elements are required throughout, what architectural guidelines would you establish to prevent layout bugs and keep the CSS maintainable?

Follow-up Questions

❓What other overflow values affect sticky positioning?
❓Can you think of a scenario where you’d intentionally combine overflow: hidden with sticky?
❓How does the browser compute the containing block for a sticky element?