Flickering / Color Shift in Right eye with Cascade Particle + Instanced Stereo

UE - Niagara - May 13, 2019

Flickering or shifted color will be seen in the Right Eye. User reports that moving the nodes from the material function to the base graph resolves the issue. Confirmed in 4.23 MAIN branch @ CL 6 ...

incorrect virtual texture shader code(in FinalizeVirtualTextureFeedback) on Mobile forward platform

UE - Graphics Features - Mar 15, 2021

in the function FinalizeVirtualTextureFeedback, the micro "USE_DBUFFER && MATERIALDECALRESPONSEMASK" returns true on mobile forward, while there is no DBUFFER on Mobile forward obviously. This takes ...

MoviePipeline: Can't inherit from UMoviePipelineSetting in BP due to PURE_VIRTUAL

UE - Anim - Sequencer - Oct 28, 2021

IsValidOnMaster/IsValidOnShot need to be BlueprintNativeEvents with a default C++ implementation and allow derived classes to override the function. This is needed so that you can create custom set ...

EnableGDT does not work correctly in PIE

UE - AI - Jul 13, 2015

The console command "EnableGDT" will bring up the GDT menu, however no information will be updated. The screen gains the menus for GDT however no functionality seems to exist. Workaround: press ' ...

Mouse cursor appears outside of viewport while in PIE if UE4 and UDK are both open

Tools - Jan 15, 2015

Mouse appears outside of viewport window when cursor is dragged off of editor window while UDK is open. This occurs even if UDk is minimized. Note: Cursor will appear outside of editor window but a ...

AHUD::DrawMaterialSimple does not render on ANdroid device when MobileHDR is disabled

UE - Platform - Mobile - Oct 23, 2015

After cooking, If user installs same project which contains drawing material via DrawTile function in HUD, is not displayed in es2, with MobileHDR off (verified on android device) DrawTile script i ...

Clicking the yellow text while recording an animation in Persona no longer stops the recording

OLD - Anim - Oct 5, 2016

No longer able to stop recording an animation by clicking the yellow text in the Persona viewport even though the tooltip when hovered over it states that you can. This is a regression from 4.13.2 ...

FString.Mid doesn't react appropriately when given negative values for the Count variable

UE - Foundation - Core - Jul 16, 2015

If you use a 5 character string (hello) to call the Mid function and provide 0 for start, -1 for count, it'll give you the entire string. This should either return an assert or treat all negatives a ...

GenerateKDopAsSimpleCollision() clamps vertices that are close to the origin which results in inaccurate primitives

UE - Gameplay - Nov 10, 2015

When DOP simplified collision is generated for a mesh that has vertices that are close to the origin, part of the function till clamp any values between -0.5 and 0.5 to be 0.5 which will cause the r ...

[CrashReport] MetalRHI crash - void FForwardLightingParameters::Set<FRHICommandList, FRHIPixelShader*>

UE - Graphics Features - Jul 20, 2017

This is a common crash affecting Mac users in 4.16. User DescriptionsI tried to build the lighting and it keeps crashingWhenever I attempt to build the project or change the preview rendering to IO ...