Unreal Engine Issues
Unreal Engine Issues
HZB Setup Mips taking considerable time in GPU Visualizer
UE - Graphics Features - Jul 19, 2016HZB Setup Mips in the GPU Visualizer seems to be taking considerable ms in 4.12 and 4.13 compared to 4.11.2. This seems to mostly affect editor/PIE GPU Visualization but looks like it should when ...
Wireframe for "r.ShowPrecomputedVisibilityCells 1" is upside down on ES2
UE - Platform - Mobile - Sep 21, 2015The wireframe for "r.ShowPrecomputedVisibilityCells 1" is upside down as stated in the UDN. ...
If shot track ends short of the Master Sequence length, all actors return to default state
UE - Anim - Sequencer - Oct 14, 2016If shot track ends short of the Master Sequence length, all actors return to default state. This becomes an issue when you need the actors manipulated in Shot 1 to maintain their "end state" into s ...
Lighting Only Affects Tilemaps From One Direction
UE - Graphics Features - Oct 9, 2018Lighting only affects tilemaps from one direction. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.22 CL# 4435744 ...
Play Rate does not affect audio tracks
UE - Anim - Sequencer - Dec 30, 2016Play Rate does not affect audio tracks. Slowing the play rate also causes the audio tracks to repeat with an offset. Note: This is working straight from a Sound Wave. If you use a sound cue, the ...
[CrashReport] Crash opening project on network drive - VCRUNTIME140!<Unknown>
UE - Networking - Aug 5, 2016This JIRA is being entered as a result of it being one of the top crashes in 4.13 Preview 1 Error message: Access violation - code c0000005 (first/second chance not available) Source Context:219 ...
Null FPhysicsActorHandle dereference in FBodyInstance::InitDynamicProperties_AssumesLocked when CreateShapes_AssumesLocked fails during async body init
UE - Runtime - Simulation - Aug 2, 2026Summary When CreateShapes_AssumesLocked fails during async body creation, the failed FBodyInstance is left in Bodies[] with a released actor handle. InitDynamicProperties_AssumesLocked is then called ...
Wrong density calculation in UBodySetup::CalculateMass
UE - Runtime - Simulation - Sep 29, 2025Wrong density calculation in UBodySetup::CalculateMass. The licensee has provided the following analysis and suggested fix: In UBodySetup::CalculateMass, the following code is present: // physical ...
GoogleVR apps prevent adjusting the volume for the phone while running
UE - Platform - XR - Oct 3, 20164.13.1 has caused an issue where the volume can no longer be adjusted for a GoogleVR application. This is a regression of functionality in 4.13.0. Tested with build: Working: 4.13.0 Binary CL-310 ...
#ifdef and #ifndef have no affect in header files
UE - Foundation - Core - Mar 17, 2016#ifdef and #ifndef have no affect when used in the header file of a class. Ex: #ifndef MYMACRO UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Test) float ANumber; #endif ANumber v ...