https://discussions.unity.com/t/prefabutility-instantiateprefab-returns-null-sometimes/223760
Prefabutility.instantiateprefab returns null SOMETIMES. - Questions & Answers - Unity Discussions
May 20, 2019 - Is there any reasons instantiateprefab would return null in some rare case in my room generator script ? It was working perfectly fine with Instantiate() but...
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https://issuetracker.unity3d.com/issues/prefabutility-dot-loadprefabcontents-returns-objects-name-before-renaming-it
Unity Issue Tracker - PrefabUtility.LoadPrefabContents returns object's name before renaming it
issue tracker