[Bug]: Livechat scrolling down doesn't hide arrow button

[efb4f5ff-1298-471a-8973-3d47447115dc]

Guidelines

• I have encountered this bug in the latest release of FreeTube.
• I have searched the issue tracker for open and closed issues that are similar to the bug report I want to file, without success.
• I have searched the documentation for information that matches the description of the bug I want to file, without success.
• This issue contains only one bug.

Describe the bug

1. Go to any video with a live chat
2. Scroll up in the chat
3. Scroll down in the chat
4. See that the blue button doesn't disappear and that u still have to scroll down to keep up with recent chats

FreeTube_vkwK4i2eOY.mp4

Expected Behavior

Button should go away and chat should automatically scroll down again. See YT chat for reference.

Issue Labels

visual bug

FreeTube Version

fa8cc07

Operating System Version

Windows 10 22H2

Installation Method

.exe

Primary API used

Local API

Last Known Working FreeTube Version (If Any)

No response

Additional Information

No response

Nightly Build

• I have encountered this bug in the latest nightly build.

[predystopic-dev]

Is this fixed already? I can't reproduce it in dev build

[github-actions]

This issue is stale because it has been open 28 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[efb4f5ff-1298-471a-8973-3d47447115dc]

Hi @predystopic-dev sorry for the delayed response. I can still replicate this on my end.

[github-actions]

This issue is stale because it has been open 28 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue is stale because it has been open 28 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue is stale because it has been open 28 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue is stale because it has been open 28 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue is stale because it has been open 28 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue is stale because it has been open 28 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[kommunarr]

I can specifically replicate this by pressing the scrollbar in the UI, but not by scrolling with my mouse.

[kommunarr]

My analysis from re-discovering this myself:

This does not occur with slow scrolling down. It might have something to do with "momentum" of a faster scroll propelling it to the bottom that's not getting caught by the onscroll event handler (onScroll in watch-video-live-chat.js). I can tell that this is the likely issue because it's not happening when I put that handler logic in a setTimeout with a 100ms delay. That would technically work, but I would like to see if there's a less hacky fix.