I've attempted to share an item in someone's inbox with another user. It shows the "Shared with other user(s)" icon next to the item but when I click the share button again it doesn't show who it was shared with and the person I shared it with does not see the item in the their inbox. I also tried impersonating the person the task is currently assigned to but cannot seem to share it as the dropdown to select a person does not ever populate.
so two things:
why does the sharing not seem to take?
why can't users other than admins get results in the user dropdown to share tasks or inboxes?
Thanks for raising the concern.
Another customer reported a similar issue that the task assigned to a user should not be locked by default it defeats the purpose of sharing.
We have a feature request logged with the product management, and once approved, this feature should be part of the upcoming release.
I can share the Jira# with you for your future reference.
Hope this helps!