UnrealBuildTool fails to build generate project files or build if the project is stored on a non-HFS partition

UE - Foundation - Cpp Tools - UnrealBuildTool - Mar 29, 2016

When a user attempts to compile a project that is stored on a non-HFS partition on OSX, UBT fails to build due to files that are being generated that start with ".". The user's proposed fix is to ha ...

AreaFlags Empty During First PIE Session After Hot Reloading

UE - AI - Dec 12, 2016

AreaID always seems to be empty during the first PIE session after hot-reloading. Only able to test in Dev-Framework CL# 3221683 due to the licensee's project being created in 4.15 and not being b ...

FixupRedirects commandlet does not auto-commit deletions

Tools - Jun 15, 2016

See this UDN: https://udn.unrealengine.com/questions/297811/fixupredirects-commandlet-submitting-marked-for-de.html The fix looks straightforward, just a one-line change but could benefit from tes ...

GC Clustering broken for USoundWave assets (crash)

UE - Foundation - Core - Mar 29, 2017

Assert crashes Editor in the GC system during packaging due to USoundWave assets not being configured for GC clustering. Disabling GC clustering in project settings is a workaround, but the fix is ...

Certain dropdowns in the Menu Bar are missing sections on Mac when expanded

UE - Platform - Apple - Apr 25, 2017

This only affects certain dropdowns and only occurs when the editor is open. Also occurs in 4.15.2 This has been seen on the following macs:AMD R9 M395 iMac running Sierra 10.12.5 ...

Crash when applying a LandscapeVisibilityMask material to a Landscape's material slot

UE - LD & Modeling - Terrain - Landscape - Apr 28, 2017

Crash that occurs when applying a masked material (with LandscapeLayerBlend and LandscapeVisibilityMask) to a Landscape's material slot. This is a regression: broken in 4.16.0 CL 3405315 worked in ...

Crash when creating a Niagara Emitter

UE - Graphics Features - Apr 28, 2017

Crash when creating a Niagara Emitter Another CrashReport: [Link Removed] Not sure if regression because the process to enable Niagara in 4.15 seems to be different than in 4.16, and I'm not sure ...

Ensure when undoing the deletion of the RecastNavMesh - Top Down project

UE - AI - May 31, 2017

While testing in //UE4/Release-4.16 CL 3466753 in Binary – I encountered an ensure when undoing the deletion of the RecastNavMesh. Regression: No This issue also occurs in //UE4/Main and //UE4/Rele ...

Crash when setting Anim to "None" with URO

OLD - Anim - Aug 28, 2019

A Crash can occur when setting a skeletal mesh's animation instance to None when it has Update Rate Optimizations enabled. An unverified proposed fix for this is to remove the nullptr check when ...

Materials with transparency still visible in alpha with holdout in Render layers.

TM - Tools - Mar 8, 2024

The Transparent materials like the Glass don't behave correctly in Raster (in PT is working as expected).  They are visible in Alpha with Holdout.  This is an Engine limitation for now. But we sho ...