Unreal Engine Issues

Crash after removing decal (using set fade out node) during design time and then hitting play

When calling set fade out on a decal during design time via a custom event that is setup to be called in editor a crash will occur when clicking PIE ...

Data Tables with 'ParticleSysParam' structs cause crash

Data Tables with 'Particle Sys Param' structs in them as variables will crash when opened. ...

Right click mirror option for scale is applied to all axes even when uniform scale is unlocked

When using the mirror (axis) option in the details panel, the mirroring behaves unexpectedly when the uniform scale is unlocked. ...

Resolution appears incorrect when using Windows Mixed reality Simulator

Resolution appears incorrect when using Windows Mixed reality Simulator. It appears to only take up around 1/4 the available screen space. ...

Weird results in lightmaps after update to 4.21.2

Reported by our licensee Gungho. Reproduced in 4.21.2, win10 ...

[CrashReporter] UE4Editor-Engine!FBoneContainer::CacheRequiredAnimCurveUids(FCurveEvaluationOption const &) [BoneContainer.cpp:263]

Generated from CrashReporter ...

Unused Foliage Type Causing Unbuilt Lighting

Foliage components will be unbuilt even after deleting all of the placed foliage in a level. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 4827620 ...

Niagara systems always compile on load.

Navigation Mesh ignores Hierarchical Instanced Static Meshes using "Build Paths" or the "Build" Button

Hierarchical Instanced Static Meshes are partially ignored after building the navigation mesh. This is causing the navmesh to be generated within all or part the HISM instead of around it.  This ...

Hypotenuse node unexpectedly returns "-nan(ind)" instead of "0.0" if both values passed into the node are "0.0"

The Hypotenuse Blueprint node currently returns a value of "-nan(ind)" if both values passed into the node are "0.0". This result is correct based on the code that the Hypotenuse node uses, but is n ...