Few issues with EB 5.1.5

Hello Stackideas!

I upgraded Easyblog to the 5.1.5 version yesterday. Unfortunately, not everything went right. I'd like to show you some issues I'm now facing :

Here is a classic article you can find on my website. Everything is OK :
https://loltracker.com/articles/mise-a-jour-sur-le-pbe-18-04

Let's see now how it displays on the frontpage :
https://loltracker.com/articles
Here's the result : i.imgur.com/hPmNJnk.jpg" target="_blank" rel="nofollow">http://i.imgur.com/hPmNJnk.jpg
The problem is that we have those youtube videos displayed in the frontpage, even if they're not a part of the introtext, and even if EB isn't supposed to display the full article on the frontpage (As you can see, the article above is displayed properly).

This problem occurs on some other articles, but I don't know why. Some examples :
Article : https://loltracker.com/articles/mise-a-jour
Frontpage : i.imgur.com/12b2X9z.jpg" target="_blank" rel="nofollow">http://i.imgur.com/12b2X9z.jpg (Icons appearing while not in the introtext).
Article : https://loltracker.com/articles/mise-a-jour-sur-le-pbe-12-04-1-1
Frontpage : i.imgur.com/5YuLavz.jpg" target="_blank" rel="nofollow">http://i.imgur.com/5YuLavz.jpg (Images appearing while not in the introtext).

I don't know if it's easily reproducible, but there are many articles on my website with the same configuration (Images/Vidéos not in the introtext, and properly not displayed on the frontpage).


I also have some questions about the new EB :

• Where can I find the autosave feature for my posts? It looks like it's still enabled, but I remember there was an option to change the frequency of savings.
  
• Where's the search function on the media manager? Did you remove it?
  
• Is it possible to change the thumbnails on the media manager? They're currently taking the top left of the picture, instead of the all the picture, which can make a bit difficult theire selection because you're not always sure of what the picture is (Example : Thumb i.imgur.com/f05F6ao.jpg" target="_blank" rel="nofollow">http://i.imgur.com/f05F6ao.jpg ;
  
Complete pic : http://i.imgur.com/SzFvEdK.jpg)

• About the AMP support, is there something to know about how it works? I didn't find something on the documentation, and it's not something that I looked a lot before it went on EasyBlog.