Possibly a bug, definitely something that needs flagging, if only to save someone else. I just had a very annoying issue for the past day, which looked something like this: 1. I had a boot scene which initialised and download some UI data as well as setting up some gameplay scenes. 2. I used a simple coroutine to load everything in, with the scenes not allowed to activate until all the boot functions read as complete. However, I found this: if you have a scene in the 'is Loading' state, the Addressable LoadAsset/LoadAssets Functions are blocked until you load the scenes in. There is no warning or console error for this, it just appears as though the addressable system has stopped. Moral of the story - don't prevent scenes from loading pending addressable operations completeing - you just lock your whole system.