Unreal Engine Issues
Unreal Engine Issues
Drag and drop does not work from a window created with PySide
UE - Editor - Feb 5, 2026The cursor position is no longer updated during drag and drop, so drag-over events cannot respond correctly. Commenting out the following code in WindowsCursor.cpp works as a workaround ( the behavi ...
A crash happens with a combination of Event Receive Tick AI and a pawn losing possession
UE - AI - May 18, 2022User reports this is a regression because it worked in 4.27, but they converted to 5.0.1 and now it causes a crash. However, I'm unable to verify this at this time. A crash happens with a combinati ...
MetalRHI Asserts When Using "Profile GPU" With RHI-Thread/Parallel-Execution
UE - Graphics Features - Sep 14, 2016When the RHI thread is enabled (with or without parallel-execution) for Metal it isn't currently possible to run "profilegpu" because the GPU timestamp emulation code isn't multi-thread safe and pro ...
ExpandEnumAsExecs always uses first Exec if an argument name matches Enum value
UE - Framework - Blueprint - Jan 13, 2023Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. EnumBugBP uses two enum cases and three argument cases for 6 total permutations:Enum w ...
FBX Transform does not scale skeletal mesh with multiple pieces properly using the Import Uniform Scale option
UE - Editor - Content Pipeline - Import and Export - Aug 15, 2016Importing a skeletal mesh fbx from blender and setting the Import Uniform Scale option for the mesh to a higher value, like 100, results in only one of the meshes being scaled while the other is lef ...
SunTemple scene does not update properly on iPhone 6S
UE - Platform - Mobile - Jul 18, 2017On the 6S, the SunTemple scene is almost unresponsive. As the player uses the thumbsticks, the lightmaps from the windows rotate to mach the player's movement; but they are the only thing. This doe ...
Landscape Grass Output Instances begin to float when using the Retopologize Tool
UE - LD & Modeling - Terrain - Landscape - Mar 14, 2017When using the Retopolgize tool on a landscape that is utilizing the Landscape Grass Tool, any pre-existing grass types will begin to float and transform their locations. The only way myself and th ...
[CrashReport] Game mode crash in UE4Game_Win32_Shipping!TStaticStateRHI
UE - Graphics Features - Feb 21, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below.Error message: Access violation - code c0000005 (fi ...
Audio in animation editor does not work properly
OLD - Anim - Apr 21, 2017There are multiple issues with the code at present 1) The animation preview world listener is not updated. This can be solved with the following override on AnimationEditorViewportClient (Following ...
The DefaultSceneRoot's tooltip claims adding a new scene component will automatically replace it as the new root, but this is no longer true
UE - Gameplay - Components - Jun 24, 2015The DefaultSceneRoot's tooltip claims, "Adding a new scene component will automatically replace it as the new root", but this is no longer true in 4.8 and 4.9. Instead, the DefaultSceneRoot remains ...