Unreal Engine Issues

Opening widget blueprint causes editor to crash

Branch Build Label UE4-Main Promoted-CL- 2323471 DESCRIPTION: User crashes when opening a Widget blueprint.  Unable to reproduce internally. *EDIT* Repro provided by User ...

Crash when launching Google VR project

Attempting to launch a packaged Google VR game on android causes the game to crash. This has occurred on two other devices. This occurs in Main as well as Dev-VR. ...

Crash when creating StaticMesh repeatedly

UE4Editor crashes when creating static meshes. Event at startup time while it tries to create default object it crash sometimes. ...

Build All Levels fails with duplicate level instances

Adding "Add Velocity" module to event handler stage causes ensure (ensureMsg)

Adding a module which has Required Dependencies (such as "Add Velocity") to event handler stage causes ensureMsg. > > In system /Game/NewNiagaraSystem.NewNiagaraSystem, module AddVelocity (NiagaraN ...

WP HLOD Crash on Small Cell Sizes

Crash when splitting a UDS pin on a collapsed graph

I came across this bug while attempting to verify UE-41073. That bug is verified, but I accidentally added the struct into the collapsed node without going into the collapsed graph and split the col ...

Crash When Opening a DataTable Based Off a Struct With a Timecode Variable

When a datatable is based off a struct with a timecode variable it will crash when opening. Found in 4.24.3 CL#11590370 Reproduced in 4.23.1 CL#9631420, 4.25 Preview 4 CL#12366721, 4.26 CL#12123513 ...

Spawnable Level Instance via Sequencer in WP map

ULevelInstanceSubsystem::OnActorDeleted: check(!IsEditingLevelInstanceDirty(LevelInstance) && !HasDirtyChildrenLevelInstances(LevelInstance)); ...

Spline Mesh regression on older iOS phone

Regression with rendering Spline Mesh Components seen on older (5s) iOS device. I did not reproduce a crash with an iPadPro A1701 or an Android Note 4 Confirmed in 4.23 MAIN at CL 6910902 ...