Unreal Engine Issues

Crashes when playing Slomo on NiagaraSystem with Solo and DesiredAge.

When Slomo 2 is used to speed up the process, TicksToProcess is greater than 1, which means that ManualTick is called several times during one loop.  When playback is completed by a ManualTick in t ...

GAS: GameplayDebugger crashes when AttributeSet has different rep conditions per attribute

When using the GameplayDebugger to show GAS debug info, and an AttributeSet has two replicated attributes with different replication conditions, a crash occurs in RegisterReplicatedLifetimeProperty( ...

Crash when opening OculusVRDartsGame without oculus software installed

Several users have reported crashes when attempting to open the OculusVRDarts game we offer in our [Link Removed] Instead of allowing the engine to crash, we should handle this issue gracefully and ...

StaticMesh->RenderData->LODResources[0].IndexBuffer empty in Standalone games.

GetArrayView is returning incorrect values in Standalone games. The correct values are returned when played in Editor. ...

Crash when TSR history separate translucency enabled

Crash when setting console command for shadow max resolution to 1

When setting the console command r.shadow.MaxResolution to a value of 1 will cause a crash. CrashReporter: [Link Removed] ...

Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh

This is a regression tested in //UE4/Release-4.27 CL#18319896 Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh. The closer a colors R, G, or B value is to 1.0 or 0.0 the mor ...

Deploying from Windows to Linux fails on the first attempt

After hitting this failure, if you try to deploy again, then it will work. This only occurs on the first attempt. Initially, I thought I hit a disc space issue I was hitting due to having a sample ...

[CrashReport] Linux crash - /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so()

This is a new Linux crash in 4.18.1. There are a few similar but different callstacks that reference dri/radeonsi_dri.so() I've attached a log, but none of the ones I've looked at appear to contai ...

Unreal 4.26 Crashes when playtesting with a groom in the scene

When you hit play with a groom in the scene, the engine crashes Additional notes: First tried adding it to a skeletal mesh through a character blueprint. Engine crashes. Engine doesn't crash if pla ...