Unreal Engine Issues

FBasePassMeshProcessor crashes in ODSC code because the WorldGridMaterial doesn't support translucency

UDN: [Link Removed] Slack: [Link Removed] Then, the return value of TryAddMeshBatch is determined by FBasePassMeshProcessor::Process. When the crash occurs, GetBasePassShaders fails to get the shad ...

Interchange tests framework need to support python pipeline

Transient Subclasses of ABrush default to supporting external packaging

ABrush::SupportsExternalPackaging overrides the base implementation of  AActor::SupportsExternalPackaging which returns false for transient actors, but it doesn't call super. As a result, transient ...

Add Substrate Material Support to Lumen Performance Overview

There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...

UnrealVS Windows 10 support - fix .NET version in manifest

Seems like we should be specifying the .NET version like this guy's fix. ...

Crash when changing the number of instances in a grouped sprite component at runtime

A crash occurs when you remove a Sprite Instance within a Paper Grouped Sprite component of an Actor BP on Event Begin Play. I was able to reproduce this crash in the binary releases of 4.11.2 and ...

Lighting Scenarios Map Check warning about multiple skylights not supported

When using Lighting Scenarios and placing a skylight in the lighting scenario levels when you build lighting there will be a map check warning that "Multiple sky lights are active, only one can be e ...

Data Table export/import doesn't support map/set properties

DataTableUtils::IsSupportedTableProperty needs updating to include those types, and we should probably also make sure they export in a nice way in the JSON exporter/importer (the CSV one can just us ...

References stored in deleted UProperties stick around in a Blueprint Class

If a UProperty that stores a reference to an asset is deleted, the reference to that asset lingers in any Blueprints that had a reference stored in that UProperty. This can lead to issues when the r ...

Animation sequence's ParticleNotify doesn't fire while playing it back in Sequencer editor

The ParticleNotify should always be triggered while playing in sequencer editor regardless whether the spawned particle is attached or not to it's bone/sockets This stopped working since 4.15 versi ...