Unreal Engine Issues
Unreal Engine Issues
Blend Node performs Blend Time after being re-initialized with a different Active Value
OLD - Anim - Jul 10, 2017Setup: Blend by Bool>Slot>Final Pose. Say the bool starts on true. While playing a Montage on the slot, flip the bool value to false. After the montage finishes, the blend node will start on true ...
Crash when playing HLS video with ElectraPlayer on iOS16
UE - Media Runtime - Media Framework - Mar 15, 2023Licensee reported crash when playing HLS video with ElectraPlayer on iOS16. According to their research, we can avoid the fix by doing the following: Delete check() in the corresponding line Engine ...
Actors are not properly restored when undoing a Replace Selected Actors transaction
UE - Gameplay - Components - Jul 22, 2020When undoing a Replace Selected Actors operation, the resulting actor is corrupt and triggers an ensure where the root component is in the process of being destroyed. This is a regression that poppe ...
Calling a parents function that is used in a child blueprint from a spawn actor from class node that is being called back in the parent will cause an error
UE - Gameplay - Blueprint - May 14, 2015If the user calls a function (We will call it "Parent's Function") from a child blueprint and then turns around and tries to call that implementation of the Parent's Function with in the parent it's ...
Custom depth gets cleared for each eye in VR
UE - Platform - XR - Dec 19, 2020From licensee: "Expected behavior (as seen in UE 4.25...also confirmed in 4.24):"[Image Removed] "Actual behavior in UE 4.26:"[Image Removed] Report from a licensee: In VR when using custom dep ...
MaterialExpressionLandscapeLayerBlend with material attributes as inputs, the output material attributes have wrong sizes
UE - Rendering - Architecture - Materials - Mar 14, 2022From the UDN ticket: When using MaterialExpressionLandscapeLayerBlend with material attributes as inputs, the output material attributes have wrong sizes: ie output Normal attribute cannot be conve ...
Native variable references like GameplayAttribute cannot be searched by "Find in Blueprints" or "Asset Search"
UE - Framework - Blueprint Editor - Jan 4, 2023"Find in Blueprints" does not turn up results when searching a GameplayAttribute by name, even when there is a GameplayEffect blueprint that has a modifier for that GameplayAttribute. This is becau ...
Sub-world partitions do not properly handle partial editor loading as world partition standalone level instances' spatially loaded actors do not get loaded even when the Level Instance is force loaded or loaded in by region.
UE - Engine Scaling - Streaming - World Partition - Aug 19, 2025Context Level Instancing is a level-based workflow designed to improve and streamline the level editing experience. In a standalone Level Behavior, when the Level Instance Actor is loaded through it ...
Crash When Material is Set to Deferred Decal with Emissive Decal Blend Mode and Forward Shading Enabled
UE - Graphics Features - Jan 25, 2019When Forward Shading is enabled, if you create a material with their properties setup with the following: Material Domain: Deferred Decal - Blend Mode: Translucent - Decal Blend Mode: Emissive T ...
[CrashReport] UE4Editor_Foliage!AInstancedFoliageActor::GetAllInstancesFoliageType() [instancedfoliage.cpp:2244]
UE - World Creation - Worldbuilding Tools - Foliage - Dec 1, 2017This is a common crash in the 4.18 release. User DescriptionsTried moving foliage to another sub-level. It wanted to move the foliage asset for some reason (I tried the same location - which was de ...