Unreal Engine Issues

SSR Does Not Work On Mobile or Mobile Preview

In our Docs page SSR is listed as compatible with mobile here: https://docs.unrealengine.com/latest/INT/Platforms/Mobile/PostProcessEffects/ While testing this doesn't seem to be the case so either ...

USkinnedMeshComponent::FindClosestBone does not respect bRequirePhysicsAsset parameter

A licensee has reported that the USkinnedMeshComponent::FindClosestBone function does not respect the bRequiresPhysicsAsset parameter, resulting in the bone returning bones that are not part of the ...

HLOD CalculateOverlap crashes when spheres barely overlap

The engine will crash when cluster bounds barely overlap. ...

Soft Object unloads after some time when stored in a Blackboard

When loading a Soft Object and directly placing the loaded Object into a Blackboard, after about 2 minutes the Object will unload and become null inside the Blackboard. This issue only occurs in a p ...

Volumetric Clouds do not render properly while in splitscreen

When implementing Volumetric Clouds in a splitscreen game, the clouds on the second player's screen render incorrectly. If the Two Player Splitscreen Layout is set to Vertical, then the clouds rende ...

Get wrong primitive scene data on mobile preview with GPUScene enabled

Crash in RHIBreadcrumbs during loading of Bundled PSO Cache if capturing an Insights trace on Win64 Development

When compiling a PSO, RHI Breadcrumbs can be fed a bad FRHIBreadcrumbNode, resulting in reading random memory and crashing during the recursive node iteration. This only happens when tracing. The i ...

Crash occur package application which set the StringTable

Crash occur the packaging application which has the title referencing StringTablem. When lunch the application with editor and standalone, it's not crash. It' not occur 4.20, and crash with 4.21 and ...

Event tick not firing when in an actor component that is added to an actor

When using actor components, if you delete a node, such as event tick and then add it to an actor, even if you modify the component again, such as adding the event tick event back, the component wil ...

Custom depth does not render on static meshes converted to blueprint without render custom depth option enabled

Custom depth does not render on static meshes converted to blueprint without render custom depth option enabled. This issue does not affect objects that are added as a component to a blueprint. To w ...