Unreal Engine Issues
Unreal Engine Issues
Translucent meshes randomly flicker when using VSM
UE - Rendering - Features - Jun 23, 2026Flickering can occur on translucent materials, usually in the distance when there is at least one directional light and when using VSM. Flickering seems highly dependent on framerate and timing. L ...
Blueprint Class functions are overridden in packaged shipping project.
UE - Gameplay - Blueprint - Mar 14, 2015When using a child blueprint that calls a parent blueprints tick and its functions, The event is not being called if you package the project for shipping Win (32-Bit) Pictures of the Parent BP are ...
ULevelInstanceSubsystem::CreateLevelInstanceFrom() is not honoring parameters bAlwaysShowDialog and LevelPackageName
UE - Engine Scaling - Streaming - Level Instances - Aug 6, 2025A Level Instance or Packed Level Actor can be created through editor scripting by using function ULevelInstanceSubsystem::CreateLevelInstanceFrom(), which receives parameters packed in the FNewLevel ...
Crash when changing Animation Segment Playrate in Animation Composite
UE - Runtime - Animation - Aug 8, 2022See [Link Removed] ...
Fixup Redirectors doesn't work in the editor
Tools - Apr 28, 2015Fixup Redirectors doesn't work in the editor when showing redirectors using the filter and then choosing Fixup. The maps that reference the redirectors aren't being checked out and fixed. I'm just g ...
[CrashReporter] Crash in FAnimNode_StateMachine::Evaluate()
OLD - Anim - Aug 22, 2016This JIRA was created as a result of it being one of the top crashes occurring in 4.13 Preview 2 Error message: Access violation - code c0000005 (first/second chance not available) Source Context ...
Doing a scene capture of a particle off screen on a thread other than the game thread in a packaged game asserts/crashes
UE - Niagara - Feb 15, 2018From licensee: When building and running the package on windows or other platforms, the game stops at an Assert when a particle is being rendered (off screen) from a thread other than the game thre ...
[Submix][Recording] - Existing Sound Wave to Overwrite option has no effect
UE - Audio - Submixes - Jul 29, 2021This is an old bug that looks like it never made its way into JIRA. Adding for documentation. ...
Making changes to a Camera Shake while previewing the Camera Shake triggers a crash
zComponent - Archive - May 23, 2022This is not a regression. Tested in //UE4/Release-4.27 CL 18319896 Making changes to a Camera Shake while previewing the Camera Shake triggers an Assertion upon compiling. ...
[CrashReport] Assertion failed: GIsHotReload inside UObjectBaseUtility::GetOutermost()
UE - Foundation - Core - Jun 14, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: GIsHotReload [Link Removed] [Line: 564] Source Context: 103 ...