Unreal Engine Issues
Unreal Engine Issues
Editor crash opening level with instance blueprint component
UE - Gameplay - Blueprint - Feb 20, 2017When an actor has an instanced blueprint property, the order in which the map's imports are being verified when loading can cause the editor to crash. For example, trying to load an instanced bluep ...
Level sequence updates more than once per frame when content editors are open
UE - Anim - Sequencer - May 27, 2016When content editors are open, they cause sequencer to be updated more than once per frame. This causes animations running in PIE to play faster than expected. Licensee provides code for a potential ...
Blueprint Implementable Events and Event dispatchers with the same name break the event dispatcher.
UE - Gameplay - Blueprint - Sep 22, 2015Creating an event dispatcher and BlueprintImplementableEvent function with the same names causes a signature conflict inside the blueprint. The event dispatcher is then broken as it cannot be delet ...
REGRESSION: HierarchicalInstancedStaticMeshComponent LOD transitions are broken in 4.9 and Main
UE - Graphics Features - Aug 24, 2015While testing another fix I noticed HISM LOD transitions are not working in Main or 4.9 branch. There is no screen-door effect and multiple LODs seem to be rendering simultaneously compared to 4.8. ...
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, 2016When 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, 2016AreaID 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, 2016See 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, 2017Assert 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, 2017This 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, 2017Crash 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 ...