Unreal Engine Issues

Crash When Building Lighting for a Level with Previously Purged Lightmaps

If you go into World settings, select Force No Precomputed Lighting, rebuild lighting to purge lightmaps, uncheck Force No Precomputed Lighting, save level, quit, reload project and try rebuilding l ...

Crash occurs in PIE when an Actor calls a method in a UObject that attempts to modify an FString member of the UObject

The Editor will crash in PIE when an Actor calls a method in a UObject that modifies some FString members in the UObject. In the Attached project, the UObject class contains two FString members and ...

Certain UPROPERTY values are not updated during auto-recompile

Sometimes manual recompile is required to make a blueprint actually recompile data-only changes, but not always. If the last manual compile was with default values, then changes are not updated. If ...

Struct with a single unaltered element will remove the element from the struct on compile

If used inside a UMG Blueprint, a struct that has only one element will remove the element from the struct after compiling the blueprint. If the element is edited or a second element is added then ...

The frame rate could be locked to around 45 occasionally on 90Hz android device.

Physics Asset ignoring Root Bone Rotation collision in Skeletal Mesh.

**Physics collision ignores Capsule Collision, When Skeletal mesh root bone orientation is rotated in the Z-Axis, resulting in unexpected collision behavior.   Screen shot has been attached to de ...

Cvars sections in Sequencer behaving incorrectly when using MRQ

Some key lines in the code:Engine\Source\Runtime\MovieSceneTracks\Private\TrackInstances\MovieSceneCVarTrackInstance.cpp:177 --> Apply   CVar when entering sectionEngine\Source\Runtime\MovieSceneTra ...

Crash when using VR Mode with Extra Viewports and a Camera Actor

From User: "Normally UE4 has an "Eject" button which is great for live-debugging your app, because you can see everything that's happening in your world, and see the World Outliner in realtime whil ...

Old iTunes DLL causes UBT to fail on startup

Engine Crashes when saving a project to disk space is full

I ran out of space in my D drive and my project autosaved and received the attached error message This is NOT a regression ...