Unreal Engine Issues
Unreal Engine Issues
MaterialInstanceConstant doesn't refresh soft references of non-overridden texture parameter
UE - Graphics Features - Aug 22, 2022Observed by a licensee: [Link Removed] When a material instance points to a material, and the material is edited to change a texture and the material and material instance are saved, the material i ...
Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way
UE - Graphics Features - Sep 28, 2021The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...
DeprojectScreenPositionToWorld has inaccurate behavior in VR
UE - Platform - XR - May 6, 2015Calling DeprojectScreenPositionToWorld while in VR mode does not project from the center of the Oculus view. Using the results of the call with a line trace will show the line coming off center fro ...
OnKeyDown does not function in packaged game
UE - Editor - UI Systems - Jul 17, 2015Pressing down a key for a widget blueprint works in PIE however, it's not functioning once the project is packaged. Project Rar File: [Link Removed] ...
[bug] OIT doesn't work correctly with alpha composite blend mode
UE - Graphics Features - Substrate - Mar 4, 2025When using OIT, AlphaComposite Materials blend as if they are using the Translucent BlendMode. The order of macro #if … #elif cases cause AlphaComposite Materials to take the same route as Transluce ...
Importing static mesh while a PIE session is running permanently breaks nanite on the asset
UE - Editor - Content Pipeline - Import and Export - Mar 12, 2025Importing a Static Mesh during PIE can cause it to never enable Nanite, even if it reports that Nanite is enabled. To re-enable Nanite on the mesh, the asset needs to be deleted and imported again ...
Hot reload causes AnimBlueprint to lose functionality and crash
OLD - Anim - Mar 31, 2015Casting to a character class inside of AnimBlueprint after a hot reload caused editor to crash Crash Reporter: [Link Removed] Additionally, Casts fail, breaking AnimBlueprint after a hot reload ...
Overlapping isn't updated on replicated components after SetWorldTransform
UE - Networking - Dec 10, 2015Overlapping isn't updated on replicated components after SetWorldTransform. Updating the transform on the Actor itself updates the overlapping as expected. Reproduced in 4.10 and Main (CL# 2798114) ...
User Play Space Rot does not change anything in Client Play Camera Shake
UE - Gameplay - Jun 11, 2015User does not change anything in Client Play Camera Shake. Reproduced in 4.8 and Main (//depot/UE4/Promotable-CL-2581498). This is a Regression: it works as expected in 4.7.6 ...
Resetting material instance parameters to default value does not update the appearance of the object that the material is applied to
UE - Rendering Architecture - Materials - Mar 10, 2025When a material instance with exposed parameters is applied to a landscape; the parameters set to a new value and then reset to back the default value, the landscape does not respect the new default ...