[Alyy]

"chrissix" covered the troubles with certain movie set artwork not being found.

The other is movie sets ending up with movie artwork. When a new movie set is added to the library, Kodi copies the movie artwork to the movie set as part of its scraping process. There is a bit in Artwork Beef that detected this for Krypton and below, but now that Leia scrapers can set more artwork (and "Universal Movie Scraper" can add them) it needs revisiting. If you disable all extra artwork from UMS then it should work again.

The thumbnails are put in the video files, which I do not want. How to fix them in the same folder ?

Before in kodi/userdate/Thumbnails

Remove everything from the options "Download these artwork types to the local files system" at the bottom of the "TV shows", "Movies", "Music videos", and "Music" tabs in add-on settings. Kodi will download the images to "kodi/userdata/Thumbnails" as part of its regular caching process.  

Hi,

Yes it work, but other thing again. Why do I do a search it does not find me all the logo? and why not put the posters, fanarts logo sagas. I have to do it manually.
 And if I do a new scan, it removes everything and looks for the same images ?