Depth of Field blur width changes depending on screen resolution

Rendering - Features Teams - Dec 18, 2019

This problem seems to occur with Cinematic DoF (DiaphragmDOF). Licensee seems to want to use the same blur when changing resolution. ...

Morph target LOD over 0 not worrking with GPU skin

Rendering - RHI - Dec 17, 2019

I do not know what happen here and I need the help of the rendering team to debug this issue. There is no log at all even with -d3debug If you import the file SK_LOD_Morph_Working.fbx its a similar ...

UAIPerceptionSystem::Tick() has a chance of not being called after level reloading

Gameplay - AI - Dec 16, 2019

UAIPerceptionSystem::Tick() is not called after level reloading. When Debugging, UAIPerceptionSystem::CurrentTime is always 0, and UAIPerceptionSystem::SourcesToRegister always contains sources to ...

Character Movement Mode in Water Volume is affecting all clients

Gameplay - Player Movement - Dec 16, 2019

Strange behavior concerning Character Movement Network Replication and a Water Physics Volume.  Upon entering water volume, Character Movement mode is set to swimming, however if more than one clien ...

Niagara ribbons flicker when receiving location events and not inheriting parent's normalized age

Rendering - Niagara - Dec 13, 2019

Ribbons that disable Inherit Parent Normalized Age flicker off when one ribbon reaches the end of its lifetime. This seems to be tied to the texture coordinates used in the default material, and off ...

Widget Components Add Thin Black Outlines to Images

Tools - UMG - Dec 13, 2019

When a slate element that uses a png with a transparency the edges have a black outline. When the Widget3DPassThrough material is applied to the widget the effect is lessened, but is the outline sti ...

Mentioning "_Validate" suffix in code comments to function names causes Compiler error

Core - UnrealHeaderTool - Dec 13, 2019

When mentioning the _Validate Suffix in code comment, Visual Studio compiler throws an error. ...

Simulating forking bones ignores import scale

Physics - Dec 12, 2019

Simulating the children bodies, but not the parent, of a skeletal mesh imported with a uniform scale not equal to 1, seems to ignore the imported scale, instead using their initial relative location ...

Niagara crash when duplicating an emitter in the timeline through right-click menu

Rendering - Niagara - Dec 11, 2019

Trying to duplicate an emitter from the timeline crashes the editor. This looks to be the result of UMovieSceneNiagaraEmitterTrack not implementing the function SupportsType.  ...

Blueprint Actor cannot delete implemented interface when Interface is converted to an Event.

Gameplay - Blueprint - Dec 11, 2019

In Editor, When you remove a return value parameter from a Blueprint Interface function's Output Category. (so there are no return values), it becomes an event. In any Blueprint that implements the ...