In Salesforce Lightning Experience, when you click Change Owner on a Case record and switch the owner type to Queues, the list of available queues does not appear by default. You must enter a search term before any results are shown.
This behavior is different from Salesforce Classic, where all queues are listed immediately when you open the Change Owner dialog without requiring a search term. The Lightning Experience behavior is expected and is not a bug.
The absence of a pre-populated queue list in Salesforce Lightning Experience is expected behavior. In Lightning, queues are displayed based on your search input rather than being pre-loaded in full — this is consistent with how other lookup fields work in Lightning Experience to improve performance.
Change the Owner of a Record in Salesforce Lightning Experience
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