Greasy Fork

v.4.66.4
Seems they are problems - and as i can see - it seems affect only Chrome.

Waterfox Classic and Quantum work normally.

Test Link:
https://www.youtube.com/watch?v=kVA0ZUvIQk0

Note:
this video have a "Market" carrousel", under the player) which it is the first time i see:
The selector for the "Market", is:
ytd-merch-shelf-renderer

Yes This is somehow a feature in YouTube. (ytd-merch-shelf-renderer)

If you don't like it you can just use css to hide it.

If adblock extension is installed, it will inject the following css to hide it.

body > ytd-app > #content.ytd-app.style-scope > tp-yt-app-drawer#guide.ytd-app.style-scope[align="start"][role="navigation"][style^="transition-duration:"][position] + ytd-mini-guide-renderer.ytd-app.style-scope + ytd-page-manager#page-manager.ytd-app.style-scope > ytd-watch-flexy.ytd-page-manager.style-scope[video-id][js-panel-height_][flexy][rounded-info-panel][role="main"][style^="--ytd-watch-flexy-"] > #single-column-container.ytd-watch-flexy.style-scope + #columns.ytd-watch-flexy.style-scope > #primary.ytd-watch-flexy.style-scope > #primary-inner.ytd-watch-flexy.style-scope > #below.ytd-watch-flexy.style-scope > #ticket-shelf.ytd-watch-flexy.style-scope + ytd-merch-shelf-renderer.ytd-watch-flexy.style-scope[at-start][item-style] > #main.style-scope.ytd-merch-shelf-renderer > #item-list.style-scope.ytd-merch-shelf-renderer:not(:empty) {
    display: none !important;
}

This script does not change anything related to ytd-merch-shelf-renderer

The difference might be due to other reasons.

Thank for the CSS:
i have done in my userstyle (and my short selector work).

And yes, the problem on Chrome is on my side.
After testing, i find the reason.

It was due to:
Youtube Play Next Queue by Cptmathix
I need use its last version and that's OK:
Youtube Play Next Queue v.2.5.3

I remember its dev said to stop to update it and now it return to work on it....