Unreal Engine Issues

Crash In FGeometryCacheSceneProxy::GetDynamicMeshElements On Editor Load With Null Material

Skylight Intensity causes brightness discrepancy between the pathtracer and realtime renderers

In a scene without a sky sphere, increasing the skylight intensity will cause the sky to brighten in the pathtracer. Other renderers do not brighten the sky, and the intensity increase is applied on ...

Data Layer replication bug

The bug is data layer runtime states can get out of sync between a client and a host depending on the initial runtime state of a data layer and the size of the replicated data layer names array. Se ...

Favorite Levels menu is hidden if Recent Levels menu was cleared

This issue is caused by the "File > Favorite Levels" menu only showing up if there are 1 or more recent levels. Once that list is cleared, the "Favorite Levels" menu is never added to the "File" men ...

Blueprint compilation resets settings on level-placed actors and inherited templates

Triggering an actor component recompilation resets all the variables to the default state on spawned actors in the level. Users can unintentionally lose property settings on placed actors in a worl ...

Crash when precaching PSOs for decals from non-game thread

During async loading from an AsyncLoading thread, DecalComponent attempts to precache PSOs which can trigger a checkf in StrongObjectPtr.h which are only allowed to be created on a game thread. ...

Laser scan import: Importing E57 provides the "Operation failed" error

Data: [Link Removed] I also tested other E57 files, and they were possible to import. This one is from RTC360.  [Image Removed] ...

Instigator is no longer automatically set when spawning actors from blueprint

Actors that are spawned from blueprints will no longer have their instigator automatically set to the instigator that spawned them. This is a regression in 5.5, because in 5.4 and earlier a null Ins ...

Blueprint Struct Issues - Data table wiped data

The user has come across various issues with using nested blueprint structs within a data table. The first issue relates to changing a variable in a child struct and setting it back then saving, cau ...

Chaos Cloth: NaNs can be introduced from bad AnimatedPositions/Normals

We've worked out at least a possible way this can occur from using uninitialized AnimatedNormals values when changing LODs. Ensuring all AnimatedNormals are initialized appears to fix the problem. ...