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So, can you tell me where this should be posted so Kodi development takes note of it?

KODI knows Atmos is not a codec and does not scrape it as such unless you force it to via NFO files. So there is no bug here as by design, KODI allows you to mess the NFO file as much as you want. We are just missing the functionality to add Atmos/DTX-X to the library for the skinners and other KODI parts to make use of.

As told you in the first response, this is a known issue and Devs know about it. It is just probably a lot of work and no one has the time as they do this as a hobby. This is not the only thing KODI ignores, it also ignores other things that are potentially important like the version/edition (Director's Cut, Extended Edition etc).

In the meantime Skinners have found ways around some of these flags that KODI ignores by using file names. So, the flags are mostly left to the skin to deal with and it is up to the skinner to add them or not. Even if the skinner adds the flags via file-naming, the functionality is rather limited and the best way is to add this via KODI core. This is how KODI community works, if we are missing a functionality, we find ways around it and wait until finally its added properly.

Ok got that one, thanks for the clarification regarding how things are going. Now I also got that also the .NFO is just a workaround in reality  
Regarding the editions I also realized that but I just try to get posters with the correct edition for the time being, or editing the name in the library then. But yes, would be nice to get that with the scraping already.