Unreal Engine Issues
Unreal Engine Issues
Jittering effect with Physics Constraint Actor using Linear Limits
UE - Simulation - Physics - Mar 26, 2018Jittering effect with Physics Constraint Actor using Linear Limits. This only seems to affect the Physics Constraint Actor from the Modes panel, with the static mesh starts near the physics constrai ...
Lighting on Paper 2D Tile Maps is Broken
UE - Graphics Features - May 8, 2018In 4.18.3 this feature is working. In 4.19.2 the feature is broken. Per User: Half of the Lights Cone or Sphere will properly interact with the TileMap as intended, the other half will not for wha ...
Calling Array_Identical in a blueprint results in a compile failure with nativization
UE - Gameplay - Blueprint - May 13, 2020REGRESSION Does not occur in 4.24 Blueprints that call Array_Identical results in a failure during nativization:F:/Projects/Release/TestNativizeArray/Intermediate/Plugins/NativizedAssets/Windows/Ga ...
ARCore blank black screen when showing planes [Galaxy S9+]
UE - Platform - XR - Mar 7, 2022Checking block/fail tests for ARCore on Android. Packaging ARDebugCheck to test that planes appear on screen reveals that they do not correctly appear. Settings have been confirmed per testrail and ...
[Feature Request] FWebBrowserWindow::UnbindUObject of IOSPlatformWebBrowser.cpp is not implemented yet
UE - Platform - Mobile - May 23, 2018FWebBrowserWindow::UnbindUObject on iOS is not implemented yet. IOSPlatformWebBrowser void FWebBrowserWindow::BindUObject(const FString& Name, UObject* Object, bool bIsPermanent /*= true*/) { } ...
Compute shader TAADilateVelocity crashes on macOS
UE - Platform - Apple - Oct 14, 2021Summary A licensee recently integrated the Oceanology 5 plugin from the marketplace and it triggered a crash on macOS/Metal.Platform The licensee is running macOS Bit Sur 11.5.2 on an AMD Radeon Pro ...
Crash when using StaticDuplicateObject with mismathced Source and Destination class types
UE - Foundation - Jun 19, 2025Starting in Unreal Engine 5.4, StaticDuplicateObject internally switched to using Unversioned Property Serialization (UPS) for performance reasons. However, UPS assumes the source and destination ob ...
Register Default Device setting for Raw Input requires a restart to take effect
UE - Gameplay - Input - May 29, 2019Toggling the Register Default Device setting for the Raw Input plugin does not take effect until the user restarts the editor. If this is expected, it is not communicated to the user (either by too ...
Sampling Scene Texture in Custom Expression in Post Process Material Breaks Viewport UV
UE - Graphics Features - Apr 6, 2018This issue does not occur in 4.18.3 but does occur in 4.19 and Main, making this a regression. Per user: I suspect there's an issue with custom expressions and sampling coordinates. It appears onc ...
Crash when connecting to source control
Tools - Dec 28, 2015Attempting to connect to Perforce source control causes the editor to crash in 4.10.1. The action being preformed (connecting to source control) and repro steps (reported by licensee) match [Link R ...