Unreal Engine Issues

FMediaFoundationMovieStreamer::Init() returns true even if the movie could not open.

Regression: "Play particle effect" anim notifies are not seen in the editor playing level sequence/matinee when Attached is set to false

Not Attached particle system is not seen in the viewport of the editor. This particle will be seen normally when PIE.  Regression? Yes. This issue is not reproduced in 4.17 version. You can simply ...

[CrashReport] UE4Editor_Engine!FUniformExpressionSet::CreateUniformBuffer() [materialuniformexpressions.cpp:382] - IterateOverActiveFeatureLevels

No user comments ...

[CrashReport] UE4Editor_Landscape!FLandscapeVertexFactoryVertexShaderParameters::SetMesh() [landscaperender.cpp:3137]

No user comments in crash group 3127 if (SectionLodsParameter.IsBound()) 3128 { 3129 if (CurrentLODData.UseCombinedMeshBatch) 3130 { 3131 Set ...

[CrashReport] UE4Editor_Landscape!FLandscapeComponentSceneProxy::DrawStaticElements() [landscaperender.cpp:1631]

User comments in crash group:Enabled Flat Tesselation on a Terrain Material.I saved the material. 1628 if (HasTessellationEnabled) 1629 { 1630 ***** UMaterialInstance* NonTess ...

An Actor BP with an editable variable that references another Actor in the level will reference multiple examples of that Actor if it is duplicated

An Actor BP with an editable variable that references another Actor in the level will reference multiple examples of that Actor if it is duplicated. Reproduced in 4.7.2 binary and Main (//depot/UE4 ...

Android sessions do not appear in Session Frontend

Material ParticleRandom node doesn't have proper value returned in specific case

Crash on Mac when adding Convex Collision to a mesh converted from a brush

This is one of the top Mac crashes occurring in 4.16. Caused by adding Auto Convex Collision to a mesh converted from a brush. Does not occur on Windows. User DescriptionsI was trying to add a conv ...

'Autosized' SWindow with `.AutoHeight()` elements has unwanted white space

Heavily discussed and diagnosed in this thread: [Link Removed] [Link Removed] narrowed down the cause: It's the calculation inside the SWindow that is wrong, sometime. It adds SWindowDefs::Default ...