I have a managed package that contains a picklist with some values (static values -not global). As my solution expanded I added a new value to this picklist, and created a beta package. After installing the beta package in a sandbox org I noticed the new value was absent.
Everything works as expected if the package is installed in a fresh org.
At first I thought I ran into this issue because the beta package was installed on top of its non-beta predecessor. But I just got the same issue upgrading to a non-beta managed release.