Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Assertion failed: OLEReferenceCount == 0 in UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private()
UE - Editor - UI Systems - Slate - Aug 22, 2017This is a regular and longstanding crash in 4.17 that has occurred since at least 4.14. Users have not provided any descriptions of their actions when the crash occurred. There has been some previo ...
Text type parameters show the same value after reload in duplicated actor
UE - Gameplay - Blueprint - Jan 4, 2021Issue occurs in both events and functions. Seems like it's only affecting Text, didn't notice this issue for other variable types. The original actor is working as expected. Only the duplicated one ...
JobObject appears to break /ZI pdb compiles
UE - Foundation - Cpp Tools - UnrealBuildTool - Mar 9, 2023It seems that the [Link Removed] UBT creates to ensure any child processes are terminated on close is somehow affecting the mspdbsrv process that cl is spawning and terminating it when cl is finishe ...
Crash when interacting with an Actor containing an Instanced Static Mesh that is in a Locked level
UE - Editor - Workflow Systems - Mar 30, 2023This is not a regression. Tested in //UE5/Release-5.1 CL23901901 Editor crashes with an assertion after interaction with an Instance Static Mesh component that is in a locked level. This doesn't af ...
Landscape Tool crashes on Layer Import
UE - LD & Modeling - Terrain - Landscape - Mar 12, 2020The heightmap and weightmaps were created using Terresculptor, and exported in the correct format. If you import everything except the layermaps, the landscape is generated and the layers can be pai ...
UAnimNotify::Notify not called during USkeletalMeshComponent interaction with UPhysicsControlComponent when PhysicsBlendWeight is zero
UE - Anim - Synthesis - Physics Control - Mar 30, 2025UAnimNotify::Notify not called during USkeletalMeshComponent interaction with UPhysicsControlComponent when PhysicsBlendWeight is zero. The licensee has provided his analysis of the code: If USkelet ...
Crash when opening a level with skeletal mesh asset from the map copied to the clipboard
UE - Foundation - Core - Jul 28, 2016Navigating to a level with a skeletal mesh asset from that level copied to the clipbard from the world outliner will cause the editor to crash. This can currently only be reproduced in the TM-Contac ...
Screen Space Reflection has dark artifacts at low view angles
UE - Graphics Features - Aug 23, 2016When looking at a large flat surfaces at very sharp angles dark banding will occur at the horizon. This also occurs in 4.14 CL 3091931 Note : I've attached a 4.12.5 version of the project (SSR412) ...
Instanced Static Meshes do not Cast Shadows correctly when Baked
UE - Graphics Features - Aug 31, 2016When an instanced mesh that is added in the construction script is far enough away from the root component and has it's lighting baked the shadow will not render or will render incorrectly. This w ...
Cannot open Anim Notify Manager
OLD - Anim - Jan 3, 2017Cannot open Anim Notify Manager. Right Click>Manage Notifies doesn't open it and the Manager no longer appears in the Window Menu. Regression: YES Broken: 3224400 (4.14.1) Worked: 3172292 (4. ...