Unreal Engine Issues
Unreal Engine Issues
Lighting behavior is unreliable for translucent lit materials, results are inconsistent depending on the editor camera's FOV and the editor viewport's width/height/aspect
UE - Rendering Architecture - Oct 27, 2024When working on the level editor viewport or testing on PIE, the visual appearance of additive/translucent lit materials changes significantly (and abruptly) when varying the camera FOV or the viewp ...
FIndexedCurve::ScaleCurve returns invalid results
UE - Anim - Runtime - Feb 13, 2025Calling SetKeyTime in iterating KeyHandlesToIndices array can modify the array order, so it breaks the iterator. Perhaps ShiftCurve also has the same problem. Here is a work around: void FIndexedCu ...
Perforce setup with SSL on Linux fails
UE - Platform - Linux - Jul 20, 2015Unable to connect project to Perforce using SSL on Linux. Linux uses stub libs for SSL rather than linking against full SSL libs. ...
Peripheral Vision Angle Value Not Being Clamped
UE - AI - Jan 25, 2017Peripheral Vision Angle values are not being clamped to the maximum supported value if a greater value is entered. ...
Crash on draw material to rendertarget
UE - Graphics Features - May 5, 2017This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...
CLONE - Crash on draw material to rendertarget
UE - Graphics Features - May 19, 2017This crash has started occurring in 4.15.2. It seems to be a regression from 4.15.1. ...
DeterminesOutputType metadata does not work for soft reference types (TAssetPtr / TAssetSubclassOf)
UE - Gameplay - Blueprint Compiler - Aug 2, 2017It looks like FDynamicOutputHelper::IsTypePickerPin and FDynamicOutputHelper::GetTypePickerPin need to be updated to support soft references. ...
Simulate motion vectors can fail on camera cuts
UE - Anim - Sequencer - Jun 11, 2024r.MotionVectorSimulation 1 should simulate motion vectors when cutting cameras, but this appears to be broken on some loops. ...
Jump Animation for FPS template character breaks on land
OLD - Anim - May 6, 2015When jumping in the first person template project, the "is in air" animation continues to play after landing. Solution: Switching out the "FirstPerson_JumpStart Asset" node for the "FirstPerson_J ...
UE5.6+ - Mutable - IDPrefix crash when combining Child Objects, Add to Mesh Component and Extend Mesh Section.
UE - Anim - Mutable - Jul 21, 2025So the issue seems to be a combination of Add To Mesh Component and Extend Mesh Section. I've tried this in Epic Launcher 5.6, 5.6 in-house modified engine as well as ue5-main 5.7 from git (editor ...