Unreal Engine Issues
Unreal Engine Issues
Crash when calling FillDataTableFromCSVString() while viewing the contents of the data table
When the function UDataTableFunctionLibrary::FillDataTableFromCSVString() is used from Editor Utility Blueprints or Python Scripts, and the contents of the affected Data Table are currently being vi ...
PSO Creation hangs on task in Shipping build
UE - Rendering Architecture - RHI - Nov 27, 2023Running with `r.AsyncPipelineCompile=0` causes the issue not to happen. It fails to open about 4 times out of 5. No such problem in development build., it always succeeds. We noticed that if we de ...
Take Recorder - Viewport Freezing and Performance Degradation When Recording Without Subsequences
UE - Virtual Production - Tools - Take Recorder - Apr 11, 2024Description: In Unreal Engine 5.4, when recording camera movements using the Take Recorder with the "Record Sources Into Sub Sequences" option turned off, significant viewport freezing and performan ...
Sequencer - When a subsection has negative play rate, any nested sub-subsections fail to evaluate
UE - Anim - Sequencer - Jul 3, 2025Consider a sequence hierarchy with more than two layers. If the top-level sequence uses a negative timescale on a sub-sequence, the contents inside it animate as expected, but any nested sub-sequenc ...
Attempting to open a certain blueprint (NewPickup) crashes project
UE - Gameplay - Blueprint - Jan 16, 2015Acquired a blueprint from a user cannot open it. It crashes project when opening the blueprint "NewPickup" ...
Bisecting a BSP with another BSP with an axis scale value at < .25 breaks bsp faces
UE - LD & Modeling - Modeling Tools - BSP - Sep 26, 2016Bisecting a BSP with another BSP with an axis scale value at a value < .25 breaks bsp faces, causing them to no longer render correctly. NOTES The value at which this begins to occur is 0.249992 ...
iOS Device displays textures darker than in Editor
UE - Platform - Mobile - Jan 30, 2017The issue is that on iOS devices textures are displaying significantly darker than expected. I did a color calibration with my monitor to get a more accurate representation of the texture. I set th ...
Packaging for ARM 32 bit fails during build phase with libopenvr_api.so: file not recognized
Tools - May 8, 2017This is the ouput in the UnrealBuildTool log:[301/301] Link ThirdPersonServer D:/GitHub-Release-4.16/3427662/Engine/Source/ThirdParty/OpenVR/OpenVRv1_0_6/lib/linux64/libopenvr_api.so: file not reco ...
[CrashReport] UE4Editor_InputCore!FKey::FKey()
UE - Editor - UI Systems - Slate - Nov 1, 2017This is a trending crash coming out of the 4.18 release. It may be a regression as there are no records of it occurring in 4.17. Users have not provided any descriptions of their actions when the c ...
[CrashReport] UE4Editor_ImageCore!CopyImage() [imagecore.cpp:144]
UE - Graphics Features - Mar 27, 2018No user comments on crash group 135 case ERawImageFormat::BGRA8: 136 { 137 const FColor* SrcColors = SrcImage.AsBGRA8(); 138 for (int32 TexelIndex = 0 ...