Unreal Engine Issues

[Perforce Integration] Duplicate asset, renamed to match deleted parent, results in undesired marked deletion of duplicate asset in Perforce

AfterMotionBlur Translucent Material With Local Exposure Enabled Causing Artifacts

When TSR is enabled, translucent materials using the AfterMotionBlur translucency pass cause visual artifacts when local exposure is active. The artifacting is believed to occur because the local ex ...

TMatrix<T>::InverseFast() ensure when running URootMotionModifier_SkewWarp::WarpTranslation().

URootMotionModifier_SkewWarp::WarpTranslation() uses InverseFast() within a block of code that is only executed if DeltaTranslation is not nearly zero. The ToRootSyncSpace transform the code builds, ...

MultiProcessCook Shader Symbols fail to write when two workers race and try to write them at the same time

When shadersymbols are requested, cooking shaders writes the symbol files into {Project} /Saved/ShaderSymbols/<PlatformName>. These symbols are written by the function FShaderSymbolExport::Write ...

UMG: Crash When playing an animation with the Same Name as a Widget

Editor crashes when a UMG widget (Text block, whatever) and an animation track share the same name and the animation is played. NOTE: The Editor will not allow you to name a Widget the same as an a ...

Full Scene Importer resets overrides when reimporting asset

When using the Blueprint Hiearchy Type for creation on the Full Scene Importer if you've previously imported and set some of the settings like the Override Lightmap Resolution via the BP and then re ...

Destructible meshes created with PhysXLabs will not cast shadows

When importing destrucitble APB asset files from PhysX Labs there is no visible shadow cast for these meshes. The same is not true for a destructible created in UE4. These are using the default sett ...

Paper2D sprite reimport changes socket position if sprite sheet changes size

Reimporting a sprite sheet that had sockets placed on some of the individual frames will result in the sockets moving if the sprite sheet's dimensions have changed since the previous import. This wo ...

Transform does not update after first time for Instance Static mesh in Blueprint Editor

In 4.15 When you update the transform of an instance static mesh a second time the editor does not update the location, to get the update to display correctly you must close and re-open the blueprin ...

4.16 Mobile Compat Pass - QA-Decals - UI glitch when playing on a 9.3.5 iOS Device

While testing in QA-Decals on iOS device, after loading into the project the UI will be glitched ~50% of the time. After further testing, it seems this bug only occurs on iPads running the iOS vers ...