Unreal Engine Issues
Unreal Engine Issues
Phaser module is malfunctioning
UE - Audio - Apr 9, 2019The phaser module that is part of the new Audio Engine causes audio from a Sound Cue to mute after playing for one second. The user states that the issue comes from the Phaser.cpp file producing a N ...
[CrashReport] Access violation - FBlueprintCompilationManagerImpl::ReinstanceBatch
UE - Gameplay - Blueprint - Jul 20, 2017This is a trending crash in the 4.17 Preview. Unfortunately users have not provided any additional information. There is no record of this crash occurring in 4.16.2, so it is possibly a regression. ...
Physics Substepping doesn't have the same effect from 4.15 to 4.16
OLD - Anim - Aug 8, 2017Physics Substepping doesn't have the same effect from 4.15 to 4.16. In 4.16+ the ponytail in the provided project will have a jitter effect even with substepping enabled. This is a regression: Work ...
Simulated ability tasks not being cleaned up in UActorChannel::ReplicationMap
UE - Networking - Nov 20, 2018I've noticed the issue occurring in both 4.20.3 (CL 4369336) and 4.21.0 (CL 4541578). The user on AnswerHub has also noticed the issue in 4.20.2 (CL unknown) and claims the issue did not occur in 4. ...
[Enhanced Input] Edge case where bShouldBeIgnored incorrectly being reset after FlushPressedKeys is called
UE - Gameplay - Input - Apr 2, 2026[Link Removed] From UDN, the steps for their repro case: Normal case: Frame N : AddMappingContext → bShouldBeIgnored=true → FlushPressedKeys → bDown=false Frame N+1: OS IE_Repeat arrives → ...
VehicleGame cannot Compile in the Editor if it was created with a name other than "VehicleGame"
UE - Foundation - Core - Mar 12, 2018Attempting to compile a VehicleGame project will fail if it was created with a name other than "VehicleGame". ...
The Random Audio Node Function 'Randomize Without Replacement' does not Function Correctly
UE - Audio - Apr 6, 2015When attempting to play random sounds using the 'Random' node within the audio editor, the 'Randomize Without Replacement' does not function as explained via the tooltip. The options says that if y ...
GetPackageLengthForCooking can be much larger than the actual file path length
Tools - Jul 10, 2019If the file path with the asset contains a project name, the cooking file pathlength is incorrectly increased. The following code in ContentBrowserUtils :: GetPackageLengthForCooking causes this is ...
Generated Installed build Windows only quicklaunch fails because Platforms\Hololens\Binaries directory non-existant
UE - Foundation - Build - Rocket (Installed Engine) - Nov 11, 2022Repro Rate 3/3Note: Step 3 in the steps to reproduce can take 2+ hours. When trying to do a quicklaunch for Windows platform in step 11 of https://testrail.it.epicgames.com/index.php?/tests/view/1 ...
Crash After Reimporting Static Mesh With Added Material Slot
Tools - Jan 12, 2017After importing a mesh without any materials assigned, if you add a material slot and save the material. Reimporting this mesh will cause a crash. The only way to avoid this crash is to import a me ...