Unreal Engine Issues
Unreal Engine Issues
Vehicles with at least one kinematic collision do not function anymore
UE - Simulation - Physics - Oct 30, 2019Using at least one source of kinematic collision on a vehicle causes animations or movement to not function any longer. This issue persists on child bones and collisions as well. Users are unable to ...
Widget causing ensure to trigger on end play
UE - Editor - UI Systems - Nov 15, 2019Widget is causing an ensure to be hit when exiting gameplay. Tested in: 4.24 Preview2 CL#10091930 , 4.25 CL#10183780 Attached URL's from the user: https://forums.unrealengine.com/community/ge ...
"Scene Capture Component 2D" Causes Big Performance Dip In VR
UE - Platform - XR - Dec 31, 2019When a "Scene Capture Component 2D" is in a scene it causes a big performance dip in VR. It was ~45 fps from a ~90 fps with the "Scene Capture Component 2D". This doesn't occur if you are running th ...
Crash on opening Sequence Director for Level Sequence
UE - Gameplay - Blueprint - Oct 15, 2020Within the project attached, the Sequence Director can not be opened for the Level Sequence "SkateReel Sequencer Crash." The user reports being able to open the Sequence Director prior to copying an ...
Soft actor references can no longer be set in DataTables
UE - Gameplay - Blueprint Editor - Feb 9, 2021As part of [Link Removed], it was changed so soft actor references cannot be set in the editor for structure defaults. This is desired because the serialization behavior for defaults is complicated ...
Push based fast array with net.PushModelSkipUndirtiedFastArrays not replicating across multiple PIE sessions
UE - Networking - Sep 19, 2022The conditions for this bug are fairly specific. The actor must be statically placed, with its only replicated property being the fast array, and net.PushModelSkipUndirtiedFastArrays must be enabled ...
Gameplay Ability System Attribute Modifiers with a duration (including infinite) do not respect tag requirements
UE - Gameplay - Gameplay Ability System - Feb 21, 2024When using infinite or duration-based effects, required and ignored tags will have no effect on attribute modifiers. This appears to be caused by OnAttributeAggregatorDirty (GameplayEffect.cpp:2917) ...
Safezones on Android not set properly when orientation changes
UE - Platform - Mobile - Nov 5, 2024Looks like the resize that does the safe zone update is done before the orientation is updated. I suggested swapping the order to licensee in the UDN ticket and it worked for him. This should be t ...
Bundled compute PSO compilation stalling tender thread
UE - Rendering Architecture - RHI - Feb 13, 2025EA Motive has pointed out a potential bug they found related task graph synchronization and when compiling compute PSOs: [Link Removed]. From the screenshot they sent over, it seems that a task grap ...
bIgnoreAllPressedKeysUntilReleaseOnRebuild in Enhanced Input behaves unexpectedly during pawn possession
UE - Gameplay - Input - Jun 11, 2025This is a speculative bug report from the user. The fix for this is to re-do the work of 31224705 but in a better way. The "bShouldBeIgnored" flag is being overriden by the previous mapping's va ...