[Feature request] 1st conversational comments won't hide while scroll

[r-u-e]

Checklist

• I have searched for existing issues (open and closed) and confirmed this feature hasn't been requested before
• I believe this feature request will benefit more than 10% of users, not just myself

Feature Description

When a conversational thread is expanded, the original post remains pinned to the top and cannot be scrolled away.
it should scrolled to hide as others comments

what's more, it would be great if the paused video could also hide when scrolled with comments, but pinned player when player is playing.

screen-20260813-091456.mp4

screen-20260813-101152.mp4

egs. (https://github.com/bggRGjQaUbCoE/PiliPlus)