Soft Object Pointers may not fire Rep Notifies

UE - Networking - May 3, 2019

User reported that Soft Object Pointers may not fire RepNotifies properly. This is likely also the case with Weak Object Pointers (and other similar wrappers). The main problem is that these all ge ...

Instanced object properties get cleared when compiling some (all?) types of Blueprints (Actor components and user widgets at least)

UE - Gameplay - Components - Oct 7, 2015

If an ActorComponent contains a UObject property of a type that is DefaultToInstanced, any time a Blueprint of a class containing that ActorComponent is compiled the UObject value is reset to None. ...

Opening Materials and Material Functions with Vertex Interpolator node Results in Crash

UE - Graphics Features - May 23, 2018

Per Licensee: Hello, We are migrating our project from 4.18 to 4.19.2 and we are encountering various crashes while opening our material and material functions. I'm adding a simple test case here. ...

Granular Synth stays silent since it cannot load the sound with Stream Caching enabled

UE - Audio - Jun 1, 2020

Using Granular Synth with Stream Cache enabled, Granular Synth will stay silent since it cannot load the sound with Stream Caching turned on. This was reported and tested in 4.25 (CL-13144385). Thi ...

Moving the Material Node for Starter Content Materials within the Editor Graph will increase the Texture Sample Count

UE - Graphics Features - Apr 27, 2016

The issue occurs when you simply move the material node itself and click the 'Apply' button to begin compiling shaders. Once it has completed, the number of texture samples increases for the Stats a ...

[CrashReport] UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHICreateUniformBuffer() [d3d11uniformbuffer.cpp:218]

UE - Graphics Features - Jun 12, 2018

No user comments in crash group 208 check(Layout.ResourceOffsets.Num() == NumResources); 209 210 for (int32 i = 0; i < NumResources; ++i) 211 { 212 ...

Default UE splash logo appears briefly when launching an application with an alternate launch image on iOS

UE - Platform - Mobile - Sep 15, 2020

Various users have reported seeing the default UE splash logo appear briefly before their custom launch screen appears. This was reported to have been seen in 4.25, and did not occur for users in 4. ...

Seamless travel is preventing Server Travel

UE - Gameplay - May 10, 2021

Seamless travel seems to not be functioning properly.  With Run Under One Process set to false and Seamless travel enabled, the ServerTravel command is not bringing the server to the specified map.  ...

Renaming blueprint macro causes Failed import for EdGraph errors

UE - Gameplay - Blueprint - Feb 4, 2022

Macro libraries try to support guid-based renaming: when a specific macro is renamed blueprints using the old name will automatically point to the new name and work properly. However, this fixup hap ...

Depth reading features on devices without framebuffer fetch are relying on undefined behaviour.

UE - Platform - Mobile - Oct 26, 2016

For devices without framebuffer fetch we are relying on undefined behaviour for depth reading with decals, mod shadows and depth reading materials. (ES2 spec: 3.8.6 Texture Framebuffer Attachment). ...