Unreal Engine Issues

Cooker Generated Packages: Actors can trigger the "load" of generated packages from linker load and load them incorrectly

Generated packages have to be constructed by the cooker via FGeneratorPackage::CreateGeneratedUPackage. Some fields on the UPackage are set and ICookPackageSplitter->PopulateGeneratedPackage is call ...

Waking both of a constraint's rigidbodies re-enables collisions between constrained actors that were disabled by a Physics Constraint Actor

Waking both of a constraint's rigidbodies re-enables collisions that were disabled by the physics constraint You can also get this issue to occur by either shooting the two cubes around a bit, or by ...

Actor Foliage can't be added to Foliage Paint or Single with World Partition maps

Actor Foliage can't be added to Foliage Paint or Single with World Partition maps. ...

Binary build cpp project Mac build results in "BUILD FAILED: AddBuildProductsFromManifest: .../MyProject/Binaries/Mac/UnrealEditor-MyProject.dSYM was in manifest "/Users/jack.porter/MyProject/Intermediate/Build/Manifest.xml" but could not be found."

When the default values of Instanced variables are changed in Blueprint, the variables of actors on the level don't follow the default values

When the default value of an Instanced variable defined in C++ is changed, it is not reflected in the default value of an Actor placed on a Level. In the reproduction procedure, when the default v ...

Inconsistent Hit Results with Landscape Physical Material

The physical material returned from the hit results of a line trace done on a Landscape using a physical material is not always correct. ...

iOS packaging does not seem to be able to exclude assets not in chunk0 when using ChunkDownloader

Variant Thumbnails are washed out

I think somewhere in Thumbnail Generator::Generate Thumbnail FromTexture() is applying this washout. ...

Getting Fullscreen or Windowed Resolutions doesn't fully execute on Linux

When using "Get Supported Fullscreen Resolutions" on UE when built with Vulkan, no values are printed out. This is an issue with any platform that builds UE with -vulkan, not just Linux.  In Engine ...

There is no obvious way to disable Auto Exposure in a post process volume

There is no easy way to disable auto-exposure on a per-component basis.  This is a big source of confusion for people new to Unreal.  The work around is to set Min and Max Brightness to 1 or set to ...