Unreal Engine Issues
Unreal Engine Issues
ASan on iOS is broken
UE - Platform - Apple - Mar 1, 2024Address Sanitizer (asan) is currently not working on iOS. This could be a helpful feature to get working again. ...
Option "Update Animation in Editor" is reset for child skeletal meshes
UE - Anim - Runtime - May 24, 2024When the boolean is set on a child skeletal mesh, looks like it gets reset Specifically , at UActorComponent::ConsolidatedPostEditChange forces a reconstruction of the Blueprint, making the trans ...
Smart Link inactive by default when NavLink is a ChildActor
UE - AI - Navigation - Oct 14, 2025When placing a NavLinkProxy in ChildActor, the link is not enabled by default. In this situation, setting SetSmartLinkEnabled to true does not establish the connection. You must first set it to fal ...
Physics object with collision box detects multiple begin/end overlap events even when specific collision channel is utilized.
UE - Simulation - Physics - Mar 23, 2015If a blueprint has a physics object and a collision box, the box will register overlap begin/end events multiple times, even if the collision is set to only overlap with specific collision channels ...
SetGamePaused on EventDestroyed crashes the editor on compile
UE - Gameplay - Blueprint - Apr 1, 2015SetGamePaused on EventDestroyed crashes the editor on compile. Reproduced in 4.7.3 binary and Main (//depot/UE4/Promotable-CL-2496752) Crash Report: [Link Removed] Call Stack: UE4Editor_Engine! U ...
Alembic Importing with Incorrect UV's
UE - Gameplay - Sep 20, 2016When importing an Alembic file into the engine, the UV's appear rotated and missing textures for certain faces. This can cause stretching within the UVs which is what is being reported in the post p ...
-binnedmalloc is broken on Linux
UE - Platform - Linux - Oct 31, 2016In 4.13 launching a linux game with -binnedmalloc will use the binned allocator. In 4.14 the command line was accidentally changed to -binnedmalloc1 while making other changes. It is still -binnedm ...
Disable Actor Hidden In Game Property Does Not Propagate To Child Particle System
UE - Graphics Features - Oct 21, 2016If you check "actor hidden in game" in the details panel and then set that value to false durring runtime, any particle system component attached to that actor will remain hidden. ...
The DemoRec console command crashes the editor if used during PIE
UE - Networking - Aug 5, 2015The DemoRec console command crashes the editor if used during PIE. Reproduced in 4.9 Preview 2 binary and 4.9 Releases (//depot/UE4-Releases/4.9/Promotable-CL-2643093). Does NOT occur in 4.8.3 bina ...
Crash when Dragging Skeletal Mesh with Apex Clothing into Level
UE - Simulation - Physics - Character - Nov 29, 2016A crash occurs when you add/drag a skeletal mesh with Apex clothing into the scene. The user reporting the issue managed to find where the crash occurs and added a comment for assistance where to lo ...