Unreal Engine Issues
Unreal Engine Issues
Marking a Blueprint as Deprecated Causes Existing Instances to be Removed on Level Load
UE - Gameplay - Blueprint - Oct 13, 2016Enabling the 'Deprecated' option in a blueprint's Class Settings causes all existing instances of it to be deleting upon loading any levels that contain the blueprint. Found in 4.13.1. Reproduced i ...
Tessellation Flicker When Viewed from a Distance
UE - Graphics Features - Sep 26, 2016Tessellated objects when viewed from afar flicker. When spawned into QA-Materials the player is the perfect distance away from the tessellated object for the cube to flicker. Found in both Binary 4 ...
Nav Mesh Not Generating on Static Mesh Created From BSP
UE - AI - Oct 12, 2016Nav Mesh is not being generated on a static mesh that was converted from a BSP. Found in 4.13.1. Reproduced in 4.12.5 and 4.14 Main CL 3156733 Attached is a screenshot showing the difference betw ...
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 Editing Text in Libraries Category Text field within Material Functions
UE - Rendering Architecture - Materials - Jun 7, 2016When editing the 'Libraries Category Text' field within a Material function a crash occurs. Regression? Yes, this crash does not occur in the 4.11 release. I have attached an image for reference. ...
Final Gather Quality Post Process setting causes severe rendering issues in the Stack-O-Bot project
UE - Graphics Features - Lumen - Feb 24, 2022When opening the Stack-O-Bot project in 5.0 Preview 1, the project has a rendering issue where bright shimmering lights appear all around the screen. I discovered that this is due to the PostProcess ...
Certain particle effects in ContentExamples pause when looked at on Mac with Metal
UE - Platform - Apple - Aug 20, 2016Certain particle effects in ContentExamples stop playing when looked at from a specific angle. The affected demos are 2.1, 2.4, 2.5, and 2.7 Seen on an Nvidia MacbookPro and AMD MacPro Does not o ...
Delay nodes used in a macro cause subsequent macro calls during the delay to never complete
UE - Gameplay - Blueprint - Sep 6, 2016Calling a macro that has a delay node again before the original call's delay could finish will cause the second call to be ignored when reaching the delay node. This did not occur in 4.12.5 and is n ...
Significant frame drop while blueprint nodes are being rendered on other monitor.
UE - Editor - UI Systems - Slate - Oct 21, 2016The nodes in the blueprint editor require a lot of resources to render, causing framerate issues whenever they're being shown. The more that are shown, the worse the framerate issues. While a framer ...
On project upgrade, SubImageIndex breaks until you re-assign SubUV Animation
UE - Graphics Features - Jun 20, 2016On project upgrade, SubImageIndex breaks until you re-assign SubUV Animation Attached project is a 4.11 project, you'll need to Open a Copy in 4.12 or 4.13 ...