Same roughly. But the conditions are different.
I case is already occurring as of UE 5.4[Source build ver, engine code unchanged]. and In my win11 environment, this issue has been occurring continue 5.4.x to 5.5.1, and my game build target is a “packaged standalone for WindowsClient” build. However, the UE_LOG output “Loading is stuck, flush will never finish” was not define in the “AsyncLoading2.cpp” source code in 5.4, so the symptom occurred in the form of the launched built game not non error notify, endless never blackscreen. Also, in 5.4 the editor launches correctly and when I launch the game in “PIE Standalone” this issue does not occur.
The topic poster also reported “updating the project from version 5.4 to 5.5”, but this issue also occurs when creating a new blank preset project and non change project data packaging it, so it seems to be a game engine version specific issue and not caused by the project update. At least in my case, I was continue developing games before 5.3 and have not had this problem with the 5.3 version.
I’ve been checking at this issue for the past few months, but why is no one discussing it? I wonder if this is just a not very well known issue that occurs under certain development environments. This issue continuing in the release branch is a fatal. I hope this will be resolved as quickly as possible.
P.S. I am attaching the global=veryverbose logs of building an blank preset UE 5.5 project and experiencing the issue as a standalone build.
Attached log file