Unreal Engine Issues
Unreal Engine Issues
Add Submix Effect Blueprint Does Not Have Any Effect
UE - Audio - Dec 11, 2020Adding a second effect to the Submix Effect Chain on a Submix works as expected, but when trying to add a Submix Effect via Blueprint, there is no effect. This also applies to "Add Master Submix Ef ...
Get Mouse Position Blueprint node returns different values outside of viewport depending on whether it was called from Event Tick, or within an Actor function
UE - Gameplay - Nov 15, 2018There seems to be a discrepancy between the output of Get Mouse Position node depending on whether the node is inside an Actor function or called from Event Tick. If the node is present inside a fun ...
In editor, sub level instance's streaming state persists incorrectly after toggling Level Behavior without saving
UE - World Creation - Worldbuilding Tools - Level Instances - Jun 11, 2025When adding a sub level with world partition streaming to a main level where the streaming is also enabled, setting* Level Behavior* of the sub level to Standalone, and saving the result, in the fir ...
iOS Shipping Build using std::thread crashes on launch
UE - Platform - Mobile - Jun 2, 2017A user is reporting that using the following code in a GameMode class causes shipping iOS packages to crash on launch:void ANOGSSDKGameModeBase::StartPlay() { std::thread([](){ std::clog << "THRE ...
AddComponent node fails to be scheduled after adding an "expose on spawn" variable to an ActorComponent-based Blueprint Class.
UE - Gameplay - Blueprint - Nov 13, 2015If an existing AddComponent node is placed in an Actor Blueprint's Event Graph for a custom ActorComponent-based Blueprint Class, the node will fail to be scheduled after adding a variable marked "E ...
UGameplayStatics::SpawnEmitterAttached keeps relative location when SnapToTarget is used.
UE - Gameplay - Aug 10, 2016UGameplayStatics::SpawnEmitterAttached will keep relative position when using SnapToTarget. ...
MetalRHI crash locking camera cut to a level sequence in QAGame
UE - Platform - Apple - May 12, 2016Running into an intermittent crash in MetalRHI when locking to a camera cut in a level sequence. Very similar to [Link Removed] which is an NVIDIA GPU. ...
Framerate drops when using SceneCaptureComponents with a RenderTarget in VR
UE - Platform - XR - May 14, 2018Using SceneCapture in packaged VR projects causes poor performance. Also observed with SceneCaptureCube Does not occur in 4.18 ...
r.MobileContentScaleFactor appears to be ignored defaulting to 1 on Mobile Devices
UE - Platform - Mobile - Feb 28, 2022r.MobileContentScaleFactor = 0 should return Native Resolution; 1 should return Standard definiton; 2 shold return an High Definition Resolution. It seems that r.MobileContentScaleFactor is being i ...
Blueprint diff tool does not highlight differences when a change is made to a property in a component
UE - Gameplay - Blueprint - Jun 20, 2018When making changes to a property in a component of a Blueprint, those changes are not highlighted when looking at the changes in the Components section of the Blueprint Diff tool. ...