Unreal Engine Issues

Blueprint debug flow not shown for events triggered from FTicker

FTicker delegates don't invoke Blueprint wire highlighting when debugging in the editor. ...

UBT reporting VS2012 as an unsupported compiler even when UAT was passed -NoCompile

The editor will pass UAT the -NoCompile flag when building a Blueprint only project, however UBT has been changed to throw an exception if it detects VS2012 as the only available compiler (UEBuildWi ...

PhysX Crash when Spawning Destructible Meshes at Runtime

I was only able to reproduce this issue after receiving the user's project. The project he provided crashes when I follow his directions, but after looking at the blueprints involved in the crash r ...

Crash in ReflectionCaptureComponent::ReadbackFromGPUAndSaveDerivedData()

See UDN. Crash during autosave. ...

[CrashReport] UE4Editor_XAudio2!FXAudio2SoundSource::PrepareForInitialization() [xaudio2source.cpp:517]

joseph.w - attempting to PIE in advanced vehicle blueprint templateCrash when selecting pie ...

D3D12 uses a lot more memory than D3D11

We’re aware of some extra memory usage in the DX12, but 100% more is more than we’ve seen! I think it’s multiple sources that is causing the increase in usage but not all are known. For example, I’v ...

FSocketSubsystemWindows::TranslateErrorCode asserts on ERROR_FILE_NOT_FOUND

Even though it's undocumented, Windows can reportedly return ERROR_FILE_NOT_FOUND from WSAErrorCode. We should handle this case, see additional info URL. ...

CharacterMovementComponent::ApplyRepulsionForce uses the BodyIndex incorrectly as a bone index

The code to extract the FBodyInstance from the overlapping component is incorrectly interpreting the Overlap.BodyIndex as a BoneIndex. This results in incorrect bodies getting the force applied, as ...

FInterpCurve::InaccurateFindNearestOnSegment doesn't correctly find points on the section connecting last to first points in a closed loop

Maya navigation controls do not work as expected while Lock Viewport to Actor is enabled

Maya navigation controls do not work as expected while Lock Viewport to Actor is enabled. The camera appears to behave the same as it would normally, but the actor the viewport is locked to is moved ...