EyeAdaptation node is not working in Decal

UE - Graphics Features - May 25, 2021

It is working correctly in 4.25.4. In 4.26.2, it is not working. It is also not working in UE4main 16382403. ...

Light Types Show Flags in SceneCaptureComponent2D is not functioning properly

UE - Virtual Production - May 30, 2021

It was working until 4.25.4. It is easy to see if you turn on/off the Light Types Show Flags in SceneCaptureComponent2D. ...

Fountain emitters are constantly showing errors in the timeline and are not displaying correctly

UE - Niagara - Mar 4, 2021

This issue is not present in 4.25.4 You can also avoid the problem if the LoopBehavior of the EmitterState is Multiple and LoopDelay is enabled. [Image Removed] It seems to be a binding of certai ...

Launch on Nexus 9 fails due to unknown arm64-v8a architecture

UE - Platform - Mobile - Mar 13, 2015

Nexus 9 fails due to unrecognized CPU architecture. Need to add mapping of arm64-v8a to arm64 (UE4 internal architecture for this part) so it will fall back to armv7 for now and in future use 64-bi ...

There is a moment of T pause when Post Roll Frames is enabled and snapping is enabled

UE - Anim - Sequencer - Apr 19, 2021

When I turn off snap, the problem does not occur The problem does not occur in 4.24.3 and 4.25.4 Occurs in 4.26.2 and UE4main ...

D3D12Texture::Lock incorrectly sizes staging buffer when locking block compressed resources

UE - Rendering Architecture - RHI - Oct 23, 2024

D3D12Texture::Lock computes the size of the staging buffer on Line 1541 of D3D12Texture.cpp. This size uses the RowPitch, which for BCn resources encapsulates the size in bytes of a single row of bl ...

Cannot package project on Linux

UE - Platform - Linux - Mar 18, 2015

Trying to package a blank project on Linux fails. ...

MAC: Crash on startup

UE - Platform - Apple - Apr 10, 2015

"MacBook pro 13 2015 with yosemite 10.10.3 just crashed after launching ue4." The problem is that the recently introduced calls to IsRHIDeviceNVIDIA occur before the Mac code sets the GRHIVendorID ...

[CrashReport] UE4Editor_UnrealEd!FBlueprintCompileReinstancer::ReplaceInstancesOfClass_Inner() [kismetreinstanceutilities.cpp:1880]

UE - Gameplay - Blueprint Compiler - Oct 5, 2017

This is a somewhat common crash that has occurred throughout the 4.17 release. Users have not provided any description of their actions when the crash occurred. The callstack is similar to some ol ...

Crash when enabling HZB occlusion culling

UE - Graphics Features - Dec 16, 2020

Enabling HZB Occlusion culling results in a reproducible crash. Looks like a community member noticed this back in preview 2: https://forums.unrealengine.com/unreal-engine/announcements-and-release ...