Unreal Engine Issues
Unreal Engine Issues
FileSystemDerivedDataBackend may output a corrupted access log
UE - Foundation - Core - Derived Data - May 20, 2021This problem is caused by the AccessLogWriter has not been flushed at the termination. The following workaround flushes the Writer.class FFileSystemDerivedDataBackend : public FDerivedDataBackendInt ...
Viewport deselect hotkey no longer works
Tools - Dec 26, 2014BRANCH: MAIN CHANGELIST: 2374441 PLATFORM: Windows DESCRIPTION: The functionality to use the hotkey to deselect an object in the viewport using the ESC key no longer works in 4.7 without first sel ...
Android Client unable to join VOIP Host Session
UE - Online - Aug 6, 2019Android client is unable to join a VOIP Hosted Session. The following messaging occurs when the Client tries to join a found session on Android:LogInit: BSD_Android: I am localhost (127.0.0.1:0) L ...
Disabling collision of an actor after an overlap event will cause the event to fire twice
UE - Gameplay - Sep 3, 2015Disabling collision of an actor after an overlap event will cause the event to fire twice This is working properly in 4.10-2674146 User Description: Calling on "Set Actor EnableCollision" or "Set ...
Geometry in sublevel created with "Load Level Instance" ignores level transform
UE - LD & Modeling - Modeling Tools - BSP - Sep 26, 2017Geometry in sublevel created with "Load Level Instance" ignores level transform. Other objects, such as Static meshes are affected by the transform. This issue is not a regression. Versions tested: ...
Regression: Several project settings, especially from built-in Plugins, are being silently erased when previously they were not, which is perceived as a bug
UE - Foundation - Feb 28, 2025In UE's Project Settings, some pages are saved automatically to the project's "Config/Default<CATEGORY>.ini" file (meant to be version-controlled) on every change. Other pages have buttons "Set as D ...
Manually importing LODs are rotated 90 degrees when using Transform Vertex to Absolute
Tools - May 26, 2016When importing a Static Mesh if you use the default settings and then manually import any LODs for that static mesh they will be rotated by 90 degrees. I found that disabling Transform Vertex to A ...
Chaos : Rigid body sleeps when very small external force is applied by AddForce
UE - Simulation - Physics - Solver - May 25, 2022When a small external force is applied to the rigid body, the VSmooth value is reset in the ResetVSmoothFromForces function. Since this function ignores the current velocity, a very small velocity ...
Planar Reflections do not respect SkyLight intensity
UE - Graphics Features - Nov 14, 2017Planar Reflection actor does not reflect the intensity change of the SkyLight. In attached images, the Intensity of the SkyLight is set to 2. The darker area on the right is affected by the Plana ...
Lightmass Build Hanging at Specific Percentages
UE - Graphics Features - Sep 4, 2015Lighting will build indefinitely in certain circumstances and can be verified in Swarm Agent that it will continue to process the maps even though the log shows it has completed. This is happening i ...