Unreal Engine Issues
Unreal Engine Issues
Can not find abstract class in actor class dropdown list in GetAllActorsOfClass node
UE - Gameplay - Blueprint - Dec 15, 2020The behavior of non-variable class pins has changed in 4.26 where abstract classes like AInfo are being excluded from class pickers for general utility functions like GetAllActorsOfClass. This is no ...
Niagara particles bounce instead of resting on AMD GPU in SM6
UE - Rendering - Graphics Features - Jan 27, 2023Additional Info URL [Link Removed]…]2F00O4z000006EGZXEA4%2Fview%3FqueryScope%3DuserFolders Link to repro - [Link Removed] Old UDN question that may be relevant, similar visual bug - [Link Removed] ...
Renaming WP map does not remove original external actors
UE - World Creation - Worldbuilding Tools - OFPA - Oct 19, 2023Renaming a WP map through the content browser does not delete the external actors associated with the originally named map. The rename duplicate builder seems to work correctly and can be used inste ...
[Interchange][FBX] Issue with asset name clashes after auto import
UE - Editor - Content Pipeline - Import and Export - Jan 22, 2025The mesh changes and the asset name stays the same while the two FBX are completly different: different filename, different mesh names in the FBX CF video for repro steps. https://forums.unreale ...
Add Substrate Material Support to Lumen Performance Overview
UE - Rendering - Features - Shading Models - Feb 10, 2025There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...
ServerUpdateLevelVisibility called multiple times from UWorld::AddToWorld/RemoveFromWorld due to child connections
UE - World Creation - Worldbuilding Tools - World Partition - Apr 16, 2026A recent change to ULevelStreaming::ServerUpdateLevelVisibility ensures that this only calls APlayerController::ServerUpdateLevelVisibility once for any non-child connections ( ...
Crash on packaged dedicated server when a uproperty is marked as both replicated and editor-only
UE - Core - Cpp Tools - UnrealHeaderTool - Nov 26, 2024In some situations, it can be useful to have a replicated editor-only C++ property (For example, the user that reported this issue was attempting to replicate settings to the client for game designe ...
Editor Performance drops when removing frames from animations with curve data
OLD - Anim - May 26, 2016Editor Performance drops when removing frames from animations with curve keys Regression: No, removing frames on animations with curves had a chance to crash the editor in 4.11, which doesn't happ ...
UDN: Editor ignores platform-suffixed solution file names when checking for a compiler
UE - Foundation - Cpp Tools - UnrealBuildTool - Dec 3, 2015https://udn.unrealengine.com/questions/270801/cannot-open-modules-panel-its-missing.html MikeF: The "Modules" button will automatically become hidden if the editor thinks that the user is not a pr ...
[CrashReport] UE4Editor_Core!FGenericPlatformMemory::OnOutOfMemory() [genericplatformmemory.cpp:161]
UE - Graphics Features - Apr 20, 2017Based on CrashVisualizer data, crashes of this nature are the 4th most common in the 4.15.1 release. This crash may be expected due to the clear messaging that the system is out-of-memory, but this ...