# Scroll jank when scrolling up

**URL:** <https://meta.discourse.org/t/scroll-jank-when-scrolling-up/108381>\
**Category:** Feature\
**Created:** [February 5, 2019, 4:48am UTC](https://meta.discourse.org/t/scroll-jank-when-scrolling-up/108381 "2019-02-05T04:48:49Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![dfabulich](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/dfabulich/32/108716_2.png) [@dfabulich](https://meta.discourse.org/u/dfabulich)\
**Post date:** [February 5, 2019, 4:48am UTC](https://meta.discourse.org/t/scroll-jank-when-scrolling-up/108381/1 "2019-02-05T04:48:49Z")

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Scroll to the bottom of a long thread and refresh the page.

Grab the scroll bar and scroll up to the top of the page. You’ll see a loading spinner while the previous posts load. (You can make this problem more obvious using a network conditioning tool, e.g. Chrome Dev Tools Network tab, Slow 3G.)

Actual: As the posts load, the scroll jumps around.

In the linked video, you can see that RBoy’s post #76 “Maybe codinghorror can confirm” is at the top of the screen; then, when the subsequent page finished loading, the scroll jumps up to lid’s post #9 “It will be interesting to see if…”

> **[scrolljank-original.mov](https://drive.google.com/file/d/1ny2zYNegggQ3uPlhG9t-tEB3xkUSepcE/view?usp=drive_open)**
>
> Google Drive file.

Expected: The previous page should appear without disturbing the scroll position; whatever I saw on the screen as the previous page loads should still be on the screen when it’s drawn in.

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_[View the full topic](https://meta.discourse.org/t/scroll-jank-when-scrolling-up/108381)._