isScrolling/progress emitter doesn't always settle despite visually settling.

[ndimatteo]

Describe the Bug

Using lenis.isScrolling to enable/disable an auto-scroll behavior, and noticed that when scrolling sometimes, that both isScrolling will get stuck on smooth and progress will continue to emit insane numbers, despite visually everything being settled. This makes it impossible to reliably detect when a user has stopped interacting with it.

Example

Screen.Recording.2026-07-30.at.1.33.01.PM.mov

Expected Behavior

I'd expect that these emitters would settle consistently.

Actual Behavior

See above.

Environment

• Package version: 1.3.25
• Framework: Next.js 16x
• Browser / OS: Chrome / Mac

[clementroche]

Hello, what are the steps to reproduce?

[clementroche]

any news @ndimatteo?

[ndimatteo]

Hey there @clementroche thank you for your patience, took a bit to get an MVP up and running!

Here you go: https://codesandbox.io/p/devbox/mhvkj4

If you open the dialog, try to scroll manually, and then stop... you can see the console.log I have in place doesn't consistently show the progress to settle, nor for the isScrolling to flip consistently. All of which is causing the checks that determine when the autoscroll (lenis.scrollTo) should kick back in to become inconsistent.

Let me know what you think!