This is how it looks:
It looks like this when i open homepage
The thing is that when I change account it works normal.
It behaves like this only on homepage and in all browsers, on all computers with different screen sizes but only when I am logged in with my account.
What to do? I could really use some help.
Thank you.
Best Answer
Google is currently testing larger thumbnails for some users, which is why you can see it while logged in but not necessarily on other's accounts. An article from the Verge does contain a comment from YouTube:
There is nothing further officially on this change, or information on how to return to the original layout as yet.