Unreal Engine Issues

Hot Reload wipes all elements of UProperty TArrays in Blueprint subclasses

Hot reloading a change that affects a class that contains a TArray UProperty will wipe all of the array elements of any Blueprint subclasses of that class. Regression?: Yes This does not occur in 4 ...

Toggling visibility of Sublevels on a server can cause a disconnect if Dynamic Actors exist in the sublevels.

The PackageMap / NetGuidCache appear to get into a bad state on Clients if the Server toggles level visibility of a sublevel. This can affect currently connected clients, as well as clients that jo ...

Ambient Occlusion decals ignore Receive Decals setting on meshes

Adding an ambient occlusion decal material to a decal affects objects with "Receives Decal" disabled. Tested in: 4.23.1 CL#9631420 4.25 CL#11341939 ...

Attached Project Crashes When Attempting to Open Blueprint

The project in question: [Link Removed] The user is experiencing an issue where they've fixed compile errors on their NPC blueprint, and now are unable to open it without experiencing a crash. Righ ...

Attempting to play an animation without an anim blueprint set causes editor to crash

Attempting to play an anim montage for a character without having the Anim Blueprint Generated Class set will cause the editor to crash. Crash Reporter Link: [Link Removed] ...

Unloading a spawned Detour AI Controller using Level Streaming causes a crash

In a Level Streaming setup, unloading a level that has spawned an AI Character with a Detour AI Controller causes a crash. This was reported and tested in 4.23 (CL-8386587). This was reproduced in ...

Crash when incorrectly calling the parent constructor

Crash when incorrectly calling the parent constructor ...

Moving folder of assets crashes editor

Moving the contents folder for the Dynamic Clocks marketplace asset crashes the editor immediately. Frequency: 5/5 CrashReporter: [Link Removed] ...

Vulkan crashes on Adreno Galaxy S7

Calling SetMassOverrideInKg in a constructor will crash the engine on launch

Calling SetMassOverrideInKg reaches back to a "check(GEngine)" call in BodyInstance.cpp (line 2998). B/c of this check, the engine will crash on load if SetMassOverrideInKg is called inside a class ...