Need two bugs fixed on YouTube

1) One of my old videos, uploaded two years ago in 1080p quality, had somehow lost its option for that, and can now be displayed only in 480p.

https://www.youtube.com/watch?v=sumprGv9QuY

For comparison, here is a follow-up video I had posted barely two weeks later, which still has its 1080p option:

https://www.youtube.com/watch?v=PWxtUNen39Y

According to others, this had likely resulted from a bug of some sort. I would assume that YouTube keeps backups of its data for in case of data loss that affects users en masse. Hopefully, the missing 1080p option is something that had simply slipped through the cracks during the original recovery, and would still be retrievable by anyone with access to YouTube's data.

2) A new video I recently uploaded, which I now have set to Unlisted, does not have its thumbnail displayed in search results whenever I type anything other than its full title (I found this out by typing "brunette girls appeal), and I can only wonder how many people it originally appeared to on the front page with that wrong image. It would instead show a random still, even when I try applying a different thumbnail. I have tried viewing it incognito, which would rule out cookies and extensions. However, even uploading a revised version, with the first half-minute trimmed, defaults to the exact same frame, which still shows up when I set that version to Public.

Here is a video summarizing the issue:

https://www.youtube.com/watch?v=AQyn6cV0bXk

Please let me know when you are ready to sort that issue out. I would like to have the wrong thumbnail available to display for as briefly as possible.