EyeAdaptation node is not working in Decal

UE - Graphics Features - May 25, 2021

It is working correctly in 4.25.4. In 4.26.2, it is not working. It is also not working in UE4main 16382403. ...

Editor freezes up when dragging the scroll bar of the Visual Logger window when a bvlog file isn't loaded

UE - AI - May 21, 2021

When adjusting the scroll bar in the Visual Logger window, the editor freezes up. There is no callstack provided in the logs. The only way to close the editor at that point is to close it through th ...

Crash assigning static mesh to LightWeightInstanceStaticMeshManager

UE - Gameplay - May 21, 2021

Crash occurs when the user assigns a static to the Instanced Static Mesh Component in a LightWeightInstanceStaticMeshManager. I couldn't reproduce this with an actor blueprint with an ISMC or HISMC ...

r.MaxAnisotropy does not work in editor

UE - Graphics Features - May 21, 2021

Setting r.MaxAnisotropy by console in editor has no effect on texture sampler's MaxAnisotropy. If the startup value of r.MaxAnisotropy is 8, then the MaxAnisotropy is always 8 no matter how  r.MaxA ...

Crash when setting Kill Particles to true on some emitters in a Niagara System

UE - Niagara - May 20, 2021

When setting the Kill Particles boolean of an emitter in a Niagara System to true, the editor crashes. So far, I've only been able to reproduce the issue with the NS_EH_KP system that a user provide ...

FileSystemDerivedDataBackend may output a corrupted access log

UE - Foundation - Core - Derived Data - May 20, 2021

This problem is caused by the AccessLogWriter has not been flushed at the termination. The following workaround flushes the Writer.class FFileSystemDerivedDataBackend : public FDerivedDataBackendInt ...

Stacked shots will evaluate both sub sequences instead of just the topmost

UE - Anim - Sequencer - May 19, 2021

Overlapping shots will evaluate all shots instead of the topmost one. ...

Editor becomes unresponsive for long periods between edits of a user-defined enum type when it's referenced by one or more user-defined struct types.

UE - Gameplay - Blueprint - May 17, 2021

After adding a member to a user-defined struct type and changing the member type to a user-defined enumeration, repeated edits to that enumeration will eventually cause the editor to become increasi ...