Crash when duplicating an asset before renaming it in the Content Browser

Tools - Sep 27, 2018

If you duplicate an asset in the Content Browser before the renaming box prompts input it will cause the Editor to crash. This was reported and tested in 4.20.3 (CL-4369336). This is reproducible ...

Changing Texture compression settings breaks Materials with mismatch on Texture Sample Sampler Type

UE - Rendering Architecture - Materials - Aug 5, 2015

If you change a texture's compression settings, materials will show errors because of a mismatch in the Sampler Type of Texture Samples. This can be fixed by adjusting the Sampler Type and re-savin ...

Switching to different modes in the Modes panel causes PIE to take input from a connected VR headset for the Y axis camera movement

UE - Platform - XR - Dec 9, 2016

If a VR headset is connected, it will be used for Y axis camera input in PIE if you have switched to and from the Landscape tab in the Modes panel. You can fix this temporarily by reopening the edit ...

[CrashReport] Mac crash in UE4Editor-Engine.dylib!LoadPhysXModules()::$_0::operator()()

UE - Platform - Apple - Jun 8, 2017

This is a common Mac crash that has been occurring since 4.15. It shares the same callstack with [Link Removed], but that was verified fixed for 4.16.0, while this crash still continues into 4.16. ...

Unable to compile level blueprint after deleting a structure that was being used as a variable type

UE - Gameplay - Blueprint - Nov 6, 2017

After compiling, the variable disappears from the variable list which prevents the user from deleting it and being able to recompile the level succussfully Not a regression as it occurs in 4.18.1 a ...

Can't change to Orthographic View when viewing Character assets in Editor

OLD - Anim - Nov 20, 2017

When attempting to view an Animation Blueprint, Skeletal Mesh, or Physics Asset in any of the Orthographic views the Editor remains in Perspective View. This is a regression as the issue was not pre ...

Box Collision component with physics interacts with the player capsule when set to Overlap only

UE - Simulation - Physics - Dec 8, 2017

Box Collision component with physics interacts with the player capsule when set to Overlap only. This only seems to happen when both the Box Collision and the player capsule are set to Generate Ove ...

Static meshes in a particle system are not affected by decals

UE - Graphics Features - Dec 21, 2017

There is an issue where Static meshes in a particle system are not affected by decals, It is unsure if this is intentional behavior or not. This issue does not appear to be a regression Versions ...

GetScaledCapsuleHalfHeight does not work properly if X or Y is lower than Z scale

UE - Simulation - Physics - May 25, 2018

GetScaledCapsuleHalfHeight multiplies the CapsuleHalfHeight by the lower scale value, even if it is X or Y. Seeing as Half Height should only be related to the Z scale, this does not work out proper ...

Material Ambient Occlusion Does Not Work With Skylight Set to Movable

UE - Graphics Features - Jul 27, 2018

Material ambient occlusion does not work with the skylight set to movable. Setting the material to allow static lighting will fix the issue until the level is reloaded. Found in 4.19 CL# 4033788, 4 ...