Packages not always imported correctly when opening the project

Sometimes when opening unity we have a flurry of messages similar to this one :

Code (CSharp):

1. The type or namespace name 'AddressableAssets' does not exist in the namespace 'UnityEngine' (are you missing an assembly reference?)

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Reimporting the packages usually clears that, but it also happen on our build machine, making builds unreliable. Is this something other people have experienced?

 

Yes, we're using the version 1.1.7, and have the package correctly setup and integrated in the project. Except sometimes it seems it fails to loadq. I'm not 100% sure but I recall other packages having the sme issue so I doubt it's linked to this package in particular.