Procecdural Mesh Components without a material assigned crashes on conversion to Static Mesh

UE - Graphics Features - Aug 6, 2019

This bug doesn't occur in 4.21. The issue is at line 157 in ProceduralMeshComponentDetails.cpp . When the procedural mesh has a material the crash doesn't occur. File location: Runtime/ProceduralMe ...

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

UE - Gameplay - Blueprint - Aug 22, 2017

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 ...

Actor Variable References settable when in type array in Level blueprint

UE - Gameplay - Blueprint - Nov 13, 2017

There is an issue with Actor Variable References that become settable when in type array in the Level blueprint. Once in the array, the actor can be successfully addressed, however using the Save Cu ...

DDC corruption creates incorrect pasted topology when using Landscape Copy / Paste Tool

UE - LD & Modeling - Terrain - Landscape - Apr 3, 2017

I noticed that the copy and pasted section of the level was being painted while I was painting a nearby section of the level. This weird yellow color appeared and I undid and redid the paint to make ...

Packaged Paper2D game using Flipbooks crashes when opening Level

UE - Gameplay - Components - Sep 11, 2020

Paper2D game using Blueprint Actor with Box Collision and Flipbook Component crashes frequently when loading levels in packaged Development Build. Reported and tested in versions 4.25.3(CL 139427 ...

Foliage disappears after 1.5k if occlusion culling project setting is disabled

UE - World Creation - Worldbuilding Tools - Foliage - Aug 30, 2017

When unchecking the Occlusion culling option in the project settings, if you place over 1.5k foliage meshes in the world, they stop rendering, the meshes are still present in the level and can be se ...

[CrashReport] UE4Editor_OnlineSubsystemUtils!LastGetVoiceCallTime()

UE - Foundation - Core - Jul 19, 2017

This is a common crash in the 4.16 release. Affected users have not provided additional information. Source Context 1795 // Some tasks can only be done once we finish all scenes/viewports ...

Crashes when copying an array of actors that implement an interface into an array of interface references

UE - Gameplay - Sep 17, 2019

When assigning an array of actors that implement a specific interface to an array of the specific interface the engine crashes. This doesn't happen if the actor array is put through a for each loop ...

Execute Console Command r.SetRes Fullscreen breaks Dynamic Skylights when tied to Event BeginPlay

UE - Graphics Features - Apr 6, 2017

Using the Execute Console Command 'r.SetRes 1920x1080f' directly with an Event BeginPlay node within blueprints, any Stationary/Movable Skylighting information is no longer visible. A simple workar ...

Skewed Rotation values from camera actors in print string

UE - Gameplay - Sep 25, 2017

When using the camera actor and modifying the rotation values, the values made in the print string do not seem to match the actual values of the camera's rotation. The values appear to be close, but ...