Hi, We have encountered a problem when using game objects generated with the PSD Importer from a PSB file. We use them to animate illustrations, the prefabs are loaded using asset bundles. At runtime, the prefabs are instantiated in a hierarchy of RectTransform to be displayed in our UI (not sure if this is relevant for the crash). Everything works fine during the lifetime of the application but when we try to exit the application it freezes and must be killed manually. There is nothing in the log file noting anything went wrong. Only removing the instantiation of these prefabs in our code prevent the crash from happening. Note that this only happen on Windows builds, MacOS builds were fine. I think the crash does not occur when no Animator is attached but it might just occur less. The instantiated game objects do not need to be displayed when the application is exited for the crash to occur. As long as it's been instantiated once, the crash will occur, even if the instantiated game objects have been destroyed. I've already spent quite some time trying to reproduce the problem in a minimal bug report, using the same assets, but without success. The bug seems to only occur in very specific conditions and timing might be a factor. I recently lacked time to investigate further but it looks like some kind of race condition to me. We're using the latest 2018.3 version. If you have or need any information, this would be much appreciated. Thanks in advance.