Unreal Engine Issues

Undo Crash with Reroute node into Class pin of SpawnActorFromClass

Crash on undo with SpawnActor node that uses a reroute pin in class wire. "It looks like the variable promotion marks the blueprint as structurally modified, which triggers a skeleton compile, wh ...

Instance Static Mesh instance doubles when upgrading from 4.18 to 4.19 or higher

Instance Static Mesh instance doubles when upgrading from 4.18 to 4.19 or higher. According to Licensee, manual check is difficult. ...

Crash When Substance Material Is Applied to a Mesh In HLOD System

Crash when Substance material is applied to a mesh included in the HLOD system. Working as expected in 4.19 CL# 4033788. Unable to test issue in 4.21 CL# 4339215 due to plugin dependency. Found in ...

Custom node with SceneTextureLookup function doesn't support on Mobile anymore

Assert when having too many VR devices

Internal team is encountering a crash when adding too many VR devices. Email thread titled "Re: Crash Logs" The bug is an internal limit of devices the code supports, which is 8. If a controller o ...

Modifying collision shapes on a Skeletal Mesh with multiple cloth assets crashes

For skeletal meshes with multiple cloth assets in use, modifying any of the bone's collision body setup in the physics asset causes a crash.  ...

Find Session times out when run while in a Steam Session

A user has reported an issue where Find Session times out when attempting to run it while hosting a Steam session or while being the client of one. The user mentions that this is caused by RequestLo ...

After loading a SubLevel from the PersistentLevel of WorldComposition, the offset of WorldComposition is applied when loading the SubLevel alone

When loading a Sub Level from the Persistent Level of World Composition, the offset of WorldComposition is applied when loading the Sub Level by itself. The offset can be applied repeatedly when rel ...

Packaged project crashes on launch if third string literal in NSLOCTEXT macro is an empty string

Using the NSLOCTEXT macro with the third string literal as an empty string causes a packaged game to immediately crash on launch. No Crash Reporter window opens, and no log is created. A sample pro ...

Crash When Loading a SubLevel With HierarchicalInstancedStaticMeshComponent and SphereReflectionCapture via the Levels Window

The editor crashes when loading a SubLevel with HierarchicalInstancedStaticMeshComponent and SphereReflectionCapture via the levels window. Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# ...