Pinned post
I've found (and locally fixed) an annoying performance bug on @X web!
TLDR: go to a post with a lot of replies, and scroll up and down - notice it's laggy?
There's a component that calculates the scroll parent, and then removes the scroll listener when unmounting. But it seems we don't even have a scroll listener most of the time, so we can avoid the heavy _getScrollParent function by wrapping it in a conditional
This removes seconds of forced reflow and lag for me
Would love to get it fixed! ππ» @X @engineering @elonmusk @nikitabier
TLDR: go to a post with a lot of replies, and scroll up and down - notice it's laggy?
There's a component that calculates the scroll parent, and then removes the scroll listener when unmounting. But it seems we don't even have a scroll listener most of the time, so we can avoid the heavy _getScrollParent function by wrapping it in a conditional
This removes seconds of forced reflow and lag for me
Would love to get it fixed! ππ» @X @engineering @elonmusk @nikitabier
